I caught my girlfriend's friend while she was sleeping

My girlfriend and I have a common friend in Clara (false name), we both know her from college. She's a girl around 1.65 meters tall, with a good ass, but amazing breasts. One day Clara invited us to her house, we went, cooked some pizzas, and I brought several cans of beer to drink. Between drinks my girlfriend felt bad and ended up in the bedroom of Clara's sister who wasn't there that day. We stayed with her drinking and proposed playing truth or dare. We started calmly with basic challenges, some basic questions, but I wanted to spice it up and asked if the size of her boyfriend's penis was large according to her opinion, she didn't know how to respond and said normal, then later she asked me if I thought it was large, I humbly said I didn't know, but by that time my cock had stopped and with the drunkenness I wanted her to notice, I got up to get something from the kitchen and had a soccer short on that marked my erection well so she could see it, surely she did. When I came back I asked what sizes she liked, she told me big ones but not monstrous like blacks. Then I said if she thought I was like that, she responded she couldn't tell by just looking, and smiled at me. I caught the hint and approached her and said she could check if it's large or not, to which she agreed with some doubts but more excitement. She touched my penis over the short (I was standing up) and started a breathing of excitement. She massaged it for a while over the short and began to lower it with boxers included. My penis jumped straight into her face and she, being all nymphomaniac, started sucking it, even though my girlfriend was sleeping in the room next door but didn't care (neither did I haha) She started sucking me first with kisses and continued along the whole trunk. I have to admit she does it better than my girlfriend haha I made noises with my penis in her throat, got down a bit to get some air Those breasts covered by a pajama I was wearing. It started making me do a Boobs fuck that uff, almost made me cum at that moment. Then after that we went to her room and the very slut put herself in 4 lowering her pants leaving the thong so it could be run through, we started the in-and-out and I couldn't believe it, she was really good the hd no thought I'd get this far jaja She whispered with a low voice for me to go harder and give her more, until at one point she comes in an intense orgasm that leaves her legs trembling. I crouched down and took her flows and turned her over so she could swallow all my cum, which she did very well leaving not a single drop. After that I went to sleep with my girlfriend, hoping it happens again soon! Share your experiences on MD.