I did it without wanting but wanting her to be a hotwife

Everything started on Friday night when I remembered it was my best friend's birthday and I told my girlfriend but I didn't feel like going. My girlfriend said don't be a bore and come with her, so we went back to drinking. We were with other friends, taking shots and talking to everyone. I crossed paths with an old friend who hadn't seen me in years, so we spent the whole night catching up. My girlfriend was very social but got too drunk and started laughing, hugging my friend, it seemed normal. Around 4 am, I told my girlfriend that she should calm down because we were going to leave, my friend, who lives three hours away, said he just had a bus at 6 am, so I told him to wait until the buses start running. We got home and my friend greeted us, saying goodbye, but I told him not to go yet, that there was still time before the buses left. When we entered the house, I remembered we didn't have a couch or another bed, haha, we live in a small apartment for two people. The thing is, I said okay, let's get settled, I'm tired, so I went straight to bed and my girlfriend threw herself against the wall and got under the covers with her dress on, and I was still wearing clothes, half-asleep when suddenly I heard the door open and my friend came in and got into bed with us. I thought this son of a bitch and I didn't care, I was too tired. My girlfriend said oh it's cold, we're not going to sleep and my friend laughed, at this point I was more asleep than awake, feeling that my girlfriend had gotten under the covers next to me with her dress on but since they were covered up, I couldn't see anything. ratito I start to hear her breathing more agitated in my ear thought it was because I was already asleep around here starts to stir more strongly and a light movement already felt too weird so I glance at him barely and see my friend turned towards her on the side of her and she's facing away the two are stuck together I said son of a slut is sticking to her, I don't know why but I got hot my cock stopped in one second I didn't know if my girlfriend was awake or asleep or aware of what was happening thought 'I move like that and she'll get scared and turn around or I'll stay I want to see what's going on' already getting worked up from the heat I stayed quiet saw movement of her arm, she was putting her hand in it, sure rubbing her ass and pussyAnd from nothing I start seeing how my friend starts moving his body and my girlfriend agitated, I anesthetized by the heat, an excitement I never felt before, I came without even touching myself just from feeling my girlfriend moaning in my ear and my friend moving smoothly... I don't know when I fell asleep. But after a while I wake up to listen to noises, open my eyes and my friend wasn't there, he had left. I hug my girlfriend and lift her dress and touch her ass. Her red stockings were down to the bottom of her ass from nothing she says oh they went down she was falling asleep, I act like a fool and get on top of her, give her a good screw, she was already wet, I knew everything, I screwed her like never before, at lunch she says I liked your friend this one I didn't know I say if the weekend comes we can invite him over to make some hamburgers, and she nods with her head and keeps eating, I'm confused and hot, I want to invite him on Saturday night to eat and have a drink.