I had sex with [M]y twin brother’s girl[F]riend while he was at work

I (M55) have a twin brother. We attended different colleges about two hours apart. When were 19 and sophomores, he was in a LTR with a woman that I thought was okay, but nothing special. She had a nice body and cute face, but her personality wasn’t my cup of tea. Anyway, they lived together with another guy in an off-campus apartment. One weekend I visited them. Their roommate, the other guy, was away for the weekend, so I stayed in his room. My brother had to work 3-11 shift on Saturday evening, which meant I was home alone with his girlfriend. She cooked dinner for us and the conversation was just innocent small talk. We each had two drinks with dinner but neither of us were feeling buzzed, I don’t think.

Anyway, after dinner she announced that she was going to take a shower and went into their bedroom. I sat on the couch in the living room and watched football on TV. She came out of her bedroom wearing only a bra and panties and went into the bathroom. As she was walking down the hall she looked in my direction and I got the feeling she was making sure I saw her dressed that way and was trying to gauge my reaction.

While the water was still running, she called my name. I went to the bathroom door and spoke to her through the closed door. She asked me to hand her a razor from under the bathroom sink.

I thought this was a little strange and hesitated. While I was contemplating my options, she said “the door is unlocked.”

I didn’t want to be rude, but I was a little uncomfortable. I decided to do as she asked as quickly as possible. I found a razor and handed it to her over the top of the shower curtain rod. She took it and thanked me. She then asked me what I was watching on TV as if she wanted me to stay in the bathroom and talk to her. I told her which game I was watching and returned to the living room.

A few minutes later she emerged from the bathroom wrapped in a towel that was barely big enough to cover her nipples at the top and her pussy as the bottom. Instead of going to her room, she came to the living room, stood near where I was sitting and starting watching TV with me. Nothing was spoken.

The sexual energy was so thick it was palpable. She looked so hot. My penis was hard as a rock.

She thanked me to getting the razor and told me that she keeps herself “shaved bare down there” because that’s what my brother likes.

I mumbled something like “I bet.” and she giggled. “Jesus, girl. Please go get dressed!” I thought to myself.

After what seemed like 10 minutes she slowly walked down the hall to her bedroom and shut the door. I followed her with my eyes the whole way.

I felt relieved for about a minute until I heard her call me again. I went to the bedroom door and answered her. She asked me if I could come in and help her with something. When I opened the door, she was up on the bed in doggy position with her pussy high in the air and her head down. OMG!

I was weak. I knew it was wrong. I knew it was evil. I didn’t want to, but…I screwed her. There was no foreplay, no kissing, nothing but a hardcore raw pounding that left us both panting.

The rest of the weekend was very awkward to say the least. I only saw her a few times after that and would never allow myself to be alone with her. I felt guilty for years afterward. Fortunately they broke up about 6 months later and I never heard from or saw her after that. My brother is now happily married to a good woman.

It’s been 35 years and I never told a soul about this until now. It’s the worst thing I’ve ever done and it was to my twin brother. I’m a terrible person.

Source: reddit.com/r/gonewildstories/comments/gcrha3/i_had_sex_with_my_twin_brothers_girlfriend_while