Fruit Fly

Fruit Fly is word used to describe heterosexual men that hangs out with and/or around gay or bisexual men. Some claim they do this for the sole reason of the attention they get, others claim it is because they are in fact curious to homosexual expierences (bi/cock-curious). Others will say it's both or for none of these and that they simply just enjoy the company of gay men.
Therefore this would be the male counterpart to the a heterosexual woman doing the same thing, mostly refered to as a Fag Hag
Fruit Fly because they are flies that circles around Fruits

"That guy is such a fruit fly, he's just loves the attention he gets around gay guys"

"That guy is so cock-curious! He claims he's straight though, maybe he's a fruitfly that just enjoys the sweet aroma and attention of fruits, but I think both"