>brother recently came out to the family as as bi, and that he had a boyfriend
>surprised the hell outta me
>I hadn't suspected at all
>he's very traditionally masculine
>kind of your stereotypical Chad really, he's a fratboy jock
>had a lot of girlfriends in high school too
>guess he ended up discovering shit about himself in college, idk
>even more surprising was when he brought his bf home for Christmas
>I was expecting some bubbly little twink, like a femboy version of his past girlfriends
>instead his bf turns out to be this handsome, masculine black guy
>even taller and more built than my brother
>fucking amazingly, our parents manage not to freak out and say anything offensive
>his bf seemed super fucking nervous to meet us all
>but he was chill and charismatic so it went pretty well
>meanwhile, I'm left grappling with intrusive thoughts about their sex life
>while I wouldn't say I have an incest fetish or anything, I've always thought my brother was pretty hot
>and his bf is even fucking hotter
>so I cannot stop thinking about them hooking up, wondering who's the top, etc
>it's given me several guilty faps so far