A gay man, whether on the down low, who seems like he is totally 100% straight but happens to enjoy having sex with men. Theses guys may play football, be captain of the baseball team, or be the lead in the musical people won't question their sexuality until they see that he's having the sex with a man.

Opposite: artificial fruit
Football player: Yo Darien, you coming to the party tonight? There's gonna be tons of hot chicks.
Darien: Nah man I'm a bromosexual, ya know? Haha good game, though.
Football player: Ah right man sorry I forgot.

Darien: Don't sweat it
by ASDFLKJFDSOASFNAS October 4, 2013
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A hard man and a man's mans. Does not cry at anything nor does he get upset when children and women die however when it comes to his bro then he cries like a baby.
Examples of famous Bromosexuals are Rambo, Magneto, Xavier and Rocky
by KitKat1984 June 22, 2011
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A homosexual man who enjoys just being around his guy friends.
Man did you see Clay Aiken last night? He is such a bromosexual.
by Cnote0908 January 22, 2009
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A douchebag male who is also gay.
Most of my gay friends are pretty cool, but wow that one is a complete bromosexual.
by Rohkey March 25, 2010
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when guys are really good friends, and they make jokes or talk to/about each other in ways that are almost homosexual, but not quite.

as in:
bromosexuality-
bro1: "shit man that hurt."
bro2: "that's not what you were saying last night"
bro1: "dude... i told you not to tell anyone about that."
by missLyma October 31, 2008
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A unique and powerfull relationship amongst bros that words cannot define.
"Hey are those guys gay." "Nah man, they're just bromosexuals."

"I love you man. I don't know whats going on, I think I might be going bromo for you.."
by AGBoss May 12, 2009
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