I'm 33M and I've been with my girlfriend (32F) for over 4 years. We're both professional academic types but I think most of our friends would be shocked to find out about our sexual life. We usually go more than once a day, and we like to experiment. Both of us have been told by previous lovers that we were built for porn, both in regards to our physical attributes as well as sexual abilities. Over the course of our sexual relationship she's been very open about the fact she has little to no interest in any kind of experience with another woman. I'm fine with that, it's always been the sort of thing that I find fun to think about but wouldn't want to pursue if there was any chance of creating jealousy or insecurity with my life partner. Jump to: three weeks ago. My girlfriend's best friend from childhood is in town for her job, and decided to stick around for the weekend. We invite her over for dinner, and her and I hit it off immediately. She's a petite, blonde cheerleader type with a bubbly personality and a great sense of humor; her and I hit it off immediately. The wine was flowing, and after dinner the three if us decided to go out and show her the town. We drank more, laughed more, had one of the best nights in recent memory. My girlfriend was so excited to catch up with her BFF and she was so excited that the two of us were such fast friends. We talked until the bar closed, then took a cab home, all three of us drunk to the point of giddiness. I was exhausted when we got home and immediately brushed my teeth and got in bed. I laid there for a half an hour before I got curious what my girlfriend was up to. I stumbled down the hall and saw the two of them in the guest bedroom, curled up talking on a pillow like teenagers at a slumber party. My immediate reaction was to play the part of the bratty little brother at the slumber party, I ran in and jumped on the bed shouting and harassing them, trying to start a pillow fight. I was too drunk to realize that my "pajamas" were slightly inappropriate for this: a pair of snug boxer briefs that showcased my generously larger than average endowment. Luckily the girls were too drunk to do anything but laugh at it, and we kept laughing and play fighting. They kept insisting I needed to get out and leave them alone and I kept complaining that I wouldn't let my girlfriend be stolen from me, which led to me making very overzealous attempts at showing affection, kissing and grabbing and more playfighting. Eventually her best friend teased that now she was getting jealous, and I told her to cuddle up too. Spooned on both sides, my hands caressed both of their bodies playfully while I kissed my girlfriend's neck and shoulders. She rolled over and kissed me, and watched as my hand traced along her best friend's smooth thighs and across her hip bone. Eventually they were both doing sleepy, second base making out with me, touching through clothes and giggling. Her friend had smaller breasts with bigger, puffy areolas. They both rubbed my cock through the fabric of my underwear and laughed at how big it got trying to push it's way out if my tight briefs. We all three passed out laying there, the two of them with hands on my bulge, my hands each playfully tucked down the front of their panties, just running my fingertips through their pubic hair. I was the first to wake up in the morning, hung over and worried about the awkward reaction to the morning after. I went to the kitchen and started breakfast. My girlfriend stumbled in and poured a cup of coffee. "What was that last night?" She squeezed my ass. "You were acting crazy!" I played dumb and said I don't remember much of last night. Her friend walked in a few minutes later, came up behind my girlfriend and gave her a big hug and stole a strawberry from her plate. Then she walked to the stove and wrapped her arms around my waist and gave me a squeeze and a peck on the cheek. We spent the afternoon sightseeing, both of them acting like I was their boyfriend. No jealousy, no hint of bisexual curiosity, just two beautiful women who are best friends sharing a guy. It was amazing. We cuddled on the couch and watched a movie, and we shared a long intimate three way hug when she left the next morning. I never would have fantasized about this kind of threesome before, but now I'm seriously considering becoming a mormon. Haha