Bad idea

I feel like asking my personal trainer if he'd like to go out sometime. Terrible idea but I reaaally feel like giving it a go. :x He's probably straight, with my track record for being attracted to straight guys. I have NO gaydar so, unless a guy is wearing capris, I cannot tell if he's gay or straight. Buuuuuuut I do tend to only be attracted to guys I can't have - guys with boyfriends, straight guys, bi guys (well, I can have them but really don't want them).