My gf, Amy, sets up a threesome with our hot lab partner (FFM 21)

We saw our new lab partner, Hyun, in class the next day. The class was in a lecture hall with theater seating, designed for 100ish people, but there were only about 13 in this class. Amy and I usually sat together in our own spot and other groups clustered around the space, with lots of vacant chairs in between.

Hyun walked up and sat next to Amy, and I was on the other side of Amy.

Hyun said, “Good morning guys, do you mind if I sit with you?”

Amy smiled and said, “Of course, you can sit with us.” Amy looked over at me with excited eyes for a minute.

Hyun said, “Sorry I didn’t wear my Catholic schoolgirl uniform, Jack,” and she winked at me.

I awkwardly said, “Maybe some other time, that would be fun.” my voice got higher pitched, my voice cracked, and I nervously laughed.

Amy wrote “real smooth horn dog” on my notebook paper and grinned at me.

Hyun cocked her head and read that message. Amy tried to cover the writing too late.

Hyun wrote on Amy’s notebook, “Am I making Jack horny?” and she gave us a mischievous grin.

Amy looked over at me, she was blushing with embarrassment, then she wrote, “Yes.”

Hyun wrote, “Does that bother you?”

Amy wrote, “No, I like it.”

Hyun wrote, “Interesting..”

Amy wrote something and covered it with her hand. She was breathing heavy. She was looking at Hyun and started turning red. Amy finally lifted her hand
to show that she wrote, “Making me horny too” and she looked over at Hyun innocently.

Hyun turned red with embarrassment and her eyes got wide. She hesitated a bit, looking around, and then wrote, “Interesting..” Then she quickly looked away. She looked quickly back over at Amy and blushed.

Hyun started scribbling on a piece of paper. She folded it up into a very careful little package and passed it to me. She was covering her mouth with her hand to hold back giggling.

I opened the note, as the professor droned on. The note said, “Do you imagine me wearing panties under my Catholic school girl uniform skirt?’ There were two little squares: one that said ‘Yes’ and one that said ‘No’. It said, ‘Fill in one box with a number two pencil.’ Amy was reading along, she was now trying to hold back laughing as she looked over at Hyun.

I dug around for a number 2 pencil and furiously filled in one of the boxes, covering the answer with my hand. Amy was trying to see my answer. I folded it carefully again and passed it back to Hyun. She opened it up and saw that I checked ‘Yes,’ that she would be wearing underwear. She stifled a giggle. Amy reached over and circled my answer with a heart. Hyun blushed and looked down.

Hyun scribbled on paper again and passed me another folded note. This one said, “Are you hard right now?” Once again, it had a ‘Yes’ and a ‘No’ box. Amy looked over my shoulder and laughed when she read it.

The professor was starting to look irritated with us, so we had to stop goofing around. But, Amy and Hyun kept looking at each other nervously, smiling and cracking up.

After class, we went straight up to the lab part of this class. We had to go develop some film from the electron microscope in this tiny dark room. There was a lot of sexual tension in that little room.

Amy walked up close to Hyun, sort of cornering her against the lab bench. She said, “Can I kiss you?”

Hyun nervously said, “Yes.”

Amy gently kissed her at first, then it was obvious Hyun was getting into it and they started really making out. I moved over near them and Amy turned to kiss me. Then she stopped and Hyun started kissing me.

Amy said, “Jack never answered your last question. Do you want to see for yourself?”

Hyun seemed nervous, but said, “Yes.”

Amy unzipped my jeans and pulled out my hard dick. Hyun looked down at it. Amy started slowly stroking my dick. Hyun reached over and grabbed it too. So, their hands were both sort of my dick. Then they started kissing again.

Hyun let go of my dick and stopped kissing Amy. She said, “I’m sorry, I have to leave.” And she left us there. Amy and I finished the assignment and went to her apartment.

Amy said, “Do you think she was more freaked out kissing me or touching your dick?”

I said, “I don’t know, it seemed like she was really into it in class.”

“I hope we didn’t freak her out too much. I really like her – even if she just wants to be friends,” Amy said.

The next day, we were sitting in the lecture hall and Hyun walked in. She walked right over to us and said, “Is it okay if I sit here?”

Amy said, “Yes, of course you can sit with us.”

Amy and Hyun looked at each other and smiled a few times. Hyun grabbed Amy’s hand and held it a minute. After class, Hyun said, “Are we still going out for drinks tonight?”

Amy said, “Yes, that would be great.”

Hyun said, “I have to go, but let’s meet up for drinks – I want to talk to you guys. Alone.”

We met Hyun for drinks at a dive bar and we sat in a booth together, with Hyun on one side and Amy and me on the other.

Amy said, “Hyun, I just want to say I’m sorry…”

Hyun interrupted her, “No, Amy you don’t need to be sorry. I just kind of freaked out. I’ve never kissed a girl and I’ve never had a threesome. Well, that wasn’t a threesome, but it was sort of like it.”

Amy said, “We don’t have to do any of that stuff. I like hanging out with you, maybe we should just back off all that.”

Hyun said, “No, um, I really liked it. I loved kissing you Amy and it was really hot when we were kissing and grabbing Jack’s dick in the dark. Really hot, I can’t stop thinking about it.” She looked up at us blushing.

I ordered another round of drinks.

Hyun said, “So, have you been with girls before? I mean, we were all flirting and I was….horny, but you just came out and asked if I wanted to kiss and see his dick. I wanted to do all of that, but how were you so comfortable?”

Amy said, “Hyun, I’ve been with girls before. Jack and I have been with girls before…together.”

Hyun said, “So, you do everything with girls, Amy? And you and Jack do that together?”

Amy said, “Yes, I have had all kinds of sex with girls, with and without Jack.”

Hyun said, “This is crazy. I would not expect you two were doing that sort of thing.”

There was some awkward silence.

Hyun looked nervous and said, “So, what’s next?”

Amy said, “I don’t know, I think we should probably be friends. You aren’t into it.
Jack and I have been kind of doing some unusual things, it’s not for everyone, let’s just be lab buddies.”

Hyun said, “No, I am very much into it. I mean, I am nervous about it, and I was a little freaked out, but I want to do…all of it.”

I said, “Hyun, are you sure it’s not just the drinks talking?”

Hyun said, “it’s not the drinks. Let’s go, right now, back to your place. I’m up for whatever. It’s not like I’m a virgin.”

Amy laughed and said, “we are not hooking up tonight. You’ve been drinking and the first time we have sex everyone’s going to be totally sober. I don’t want you waking up regretting it.”

Hyun begged, “I won’t regret it though. I just had a little nerves in the lab.”

Amy said, “No, I want you to remember every detail, of the first time i go down on you.”

Hyun gulped and said, “You’re going to go down on me?”

Amy grinned and said, “I would love to, If you want. Jack is probably dying to as well.”

Hyun just giggled. Then Hyun said, “So, the two of you would do that? You’re okay with Jack and me also doing things…in the same bed with you?”

Amy said, “A lot more than okay with it, if I’m involved. It turns me on seeing Jack with a hot girl like you. You can decide what you want to do with us. I used to not let Jack fuck other girls when we had threesomes, he would only give and receive oral. But, I’ve loosened up on that and I like watching him fuck girls now too.”

Hyun looked pretty surprised and embarrassed. She just said, “Damn, that’s wild.”

Amy said, “We can just take it slow, if you want. It would be fun to just make out. I liked just feeling your body over your clothes, when we made out in the lab. You have a great ass.”

Hyun laughed and said, “Thanks, I was enjoying your body too. Your tits and ass are perfect.”

I said, “Amy actually has the nicest tits I have ever seen. They are not too big, just enough to grab onto, and they are firm. I’ve met her mom and I see where she got them.”

Amy was kind of embarrassed now and said, “Stop thinking dirty thoughts about my mom.”

We decided to leave to walk back to campus. Hyun said, “I know you said we can’t have sex tonight, but can we just make out, I really want to make out some more, Amy.”

Amy said, “Alright, you can come to my place, make out, and even sleep with us, but everyone has to promise, no sex.”

I said, “what counts as sex?”

Amy said, “No one gets naked and no hands in anyone’s underwear. Just feeling on the outside.”

I said, “So, I just spend the night with a raging boner?”

Hyun had a naughty grin and said, “I bet I could get you off sticking to those rules.”

Amy laughed and said, “That’s fine, as long as Jack’s dick stays in his boxers.”

We got to Amy’s place and thankfully her roommate was already in bed in her own room. We went into Amy’s bedroom.

Amy said, “Hyun, Jack has some tshirts here, you can sleep in one. I have an extra toothbrush you can use in the bathroom.”

Everyone got ready for bed. I was wearing boxers. The girls were both just wearing big tshirts and panties. Hyun had terrific, long, thin legs. Amy turned off the lights and hopped in bed with Hyun and me. Hyun and I were already making out and my hands were all over her ass and feeling her small, firm tits through the tshirt. She had taken off her bra to sleep.

Amy curled up against the backside of Hyun and was also running her hands all over her body. After a little bit, Hyun rolled over, so she could start kissing Amy. I could tell Hyun had her hands all over Amy. I reached around the front of Hyun and started rubbing her pussy through her underwear. She rolled over on her back and spread her legs so I could touch her better. I felt Amy’s hand touch mine as we both were touching Hyun’s crotch, and then Amy giggled.

Hyun was starting to breath heavy and moan a bit. As she kissed Amy, she reached over started touching my hard dick through my boxers. She was almost giving me a handjob. Hyun stopped kissing Amy and rolled on top of me, straddling me. She was grinding her crotch on my boner and kissing me. I was feeling her tight ass through her panties. They were riding up her ass a bit, so I could feel more bare ass cheek.

Amy leaned her face in so Hyun could kiss her while grinding on my dick. Then Hyun sat up and just worked her hips back and forth looking at Amy and me, smiling. I was starting to feel like I was going to cum. Hyun could tell. She did some side to side movement and I could feel my boner was between her labia, with only the underwear between us. I finally came in my boxers, grunting and pushing Hyun upward. She and Amy laughed hysterically and she got off me.

Luckily, I had clean boxers at Amy’s apartment, so I just went to the bathroom and cleaned up. When I came back, Hyun and Amy were making out aggressively and Hyun was fiddling with Amy’s pussy through her panties. She made Amy orgasm and they continued kissing a bit.

Hyun said, “I told you I could make you cum following your rules.”

Amy said, “Assuming you still want to tomorrow, I’m going to make you cum so hard with my tongue.”

Hyun giggled and said, “I might like to try doing that to you too.”

I said, “I’ll do it to both of you.”

Source: reddit.com/r/Erotica/comments/vjypxq/my_gf_amy_sets_up_a_threesome_with_our_hot_lab