@Ionus,
This 'acts gay, must be gay' is pointless, ok?
I doubt there is a person on this Earth who hasn't been, at some point, curious about sexual orientation, who hasn't experimented with the same sex.
Therea re some people who identify as heterosexual who have, what they refer to, as a 'penis fetish'; they love women but like the idea of penetration, and that idea automatically incorporates a penis. They are not homosexual, they just like the idea of, to use the slang term, 'pegging'.
Are you claiming every single teenage girl who tries to seduce a guy buy kissing another girl is a lesbian? that's an awful lot of heterosexuals who are secretly bisexual/homosexual...
With any luck, that will be the last time I need to jump in like this. It's just fairly annoying when the same, visibly flawed to a five year old, argument is repeated.
If it looks like a duck, and walks like a duck, it's a goose.