Unintentional threesome [MFM]

One day a friend of mine (Bruce) said he had this girl (Lizz) that wanted to hangout and she had friends, so I (26M) told him to invite her over and bring a friend. We set up a night and Lizz agreed to come hangout.

Lizz makes it over, (she’s about 5’7″ curvy, nice size boobs, nice round ass and long black hair) but she shows up by herself, so now I’m a third wheel at my own place. We go down stairs and start shit chatting and then decide to have a drink. Bruce and I started playing dominoes and Lizz decided to be he’s cheerleader and sat next to him. He’s been beating me most rounds, so I blame it on her being the lucky charm. I ask Lizz to seat next to me to prove the theory and now I start to win. Lizz goes back to his side and things reverse again.

After a while of the three of us drinking, by now we are tipsy. Lizz starts pointing at the wall behind me and says there’s something over there. Bruce and I both look and ask where, Lizz gets up, walks towards the wall gets on all four, sticking her ass out. She’s wearing see through leggings and we can see her panties. We look at each other and as again “where?” And she points again, so we take a harder look.