Show him your breast and see his reaction. If he doesn't react the way men should, then shoot him!
My suggestion is to find out if he is gay first. Then get the courage to get to know him and things will follow.
Gay people are human, just like you. Tell them your not interested.
ahh...tell him tell him...he mite go straight
what does he wear how does he look at lads and how does he talk
because i have a friend and hes gay last time he went to my house and he star to touh my penis and he tell me that he was in love wiht me and i got scared and ran out of my house.....so thats who i can tell a gay guy like's me
Guy: Hi!You: i'm gay.
Well if the guy is gay tell him you like him.But if he isn't move on!
if she's a gay girl, and by gay you mean homosexual, then changes are she doesn't like any guys.
If your really feminine he probably knows... Otherwise take it slow and just start out like telling him your gay and then later tell him you like him
You should tell the guy who likes you that you don't like him, but not until you ask the guy who you like if he likes you.
There is no magical secret way to find out. You have to befriend him and talk to him.
Not sure why you'd want to do this (unless you are gay), but the easiest way is to tell a guy you find him attractive.