I came home from work, grabbed the empty trash bin that was outside, and placed it near the back gate, and of course decided to go in through the back door. But as I was passing by one of the windows, I saw that in that room my girlfriend was licking her friend’s ass. I was shocked, and I wasn’t horny. My girlfriend was completely naked and was on her knees in front of her friend, who had pulled down her jeans. I watched it for a few minutes and didn’t know what to do. Eventually, I just went back and knocked on the front door like I usually do. After a few minutes, my girlfriend opened the door wearing a robe. She greeted me and kissed me. Kissed me on the lips with the same lips that had been between another girl’s legs. And the most interesting thing is — at that moment I felt horny.
When I went into the living room, the friend was sitting there drinking wine as if nothing had happened. I said hello and went to take a shower, like I always do after work. But this time I got an enormous amount of pleasure from masturbating. After some time, the friend left, and my girlfriend wanted to have sex with me. She was, of course, naked under the robe, and her pussy was very wet. Honestly, I don’t know how to react to this. I understand that this wasn’t the first time, and maybe she has done and does this with other girls, and maybe with guys too. What would you do in my place?