So just some clarification she is now my ex girlfriend. We broke up about 3 years ago after she went away to uni.
Right so at the time of my story I was 18 and so was my gf. Her dad was super over protective and wouldn’t let me sleep in her bed. But for whatever reason he was ok if we both slept on the living room sofa bed. I think gfs mum made him compromise.
Anyhow my gf often fell asleep around 11. We would stay up long enough till everyone is asleep so we could have sex. Then she would fall right to sleep.
I was used to staying up till 1 to 2am so I often sat there on my phone until I was tired. What happened semi regularly was her sister (23 at the time) would come down at chat with me.
This was one of those times. Me and my gf had just finished having sex, we weren’t using condoms anymore and I came inside her. She cleaned herself up and went to sleep.
A little while later her sister came down, handed me a beer and we chatted while we drank.