I see my rude black uncle around my gf, when he visits my house, usually I feel dominated and intimate [True story] [cuckold] [M20]

I was at a typical family gathering, with my relatives and my girlfriend, when I left the party a bit to get some air, an uncle of mine, half drunk, approached me and said "how much money do you want me to let me fuck your girlfriend for an hour?" I didn't answer anything, but when I heard that I couldn't stop my cock from getting hard and my mouth even started salivating a lot. He took me aside with him, put his arm around me and said: He offered me 1000 for her, 1500 without a condom and 2000 for her and me. Yes, I don't know if he is bisexual, but I know he is very sexually active, according to my aunt. This particular uncle of mine is very handsome and somewhat rude, I know the rumors about his size are true, that intimidates me a little, I consider myself someone who is straight, but since things like this happen to me with my uncle, I start to feel more feminine around him, as if I want to become his femboy