So we went on holiday the 3 of us, her sister is younger and my gf as a bigger sister she wanted to take her with us so I said ok.

Her sister is a 10! Juicy lips great round ass with DDs boobs and small hands… I remember talking to her couple months ago for sex and she was telling me what she likes etc and I was so hard for that.

It was the great opportunity, I was trying to make her feel closer to me but she was in a bad mood because of a boyfriend and as u can imagine I was a bit angy.

The days passed and I had have sex for a while and after the beach my and my gf we lay on the bed which it gas an opposite couch, my gf started feeling myndick hard and she started stroke it slowly so her sister will not understand and the time was passing my gf was stoking my harder and harder until I finish under the bedsheets.

Her sister did understand anything but I wish…

So how would u explain that? And when I'm Jokinkky talk about her sister to my gf she's upset.