Gay rights within the template of religion proves flaws in "religion"

[Esquilax]

Attracted to men + Sexual intercourse with women = (Heterosexual)?

No, homosexual if it's a guy.

Sexual intercourse with men + Attracted to women = (Homosexual)?

Wrong again, assuming we're talking about a man.

Point: No matter what is the sexual orientation, the (final) act is still the factor in figuring out sexual orientation.

Nope. Attraction dictates orientation. It may surprise you, but there aren't as many "gold star" gay folk as you might want to believe; Generally speaking lesbians will have slept with some men, and gay dudes with some women. There's nothing preventing them from doing so, and in fact given the relatively recent history of intolerance homosexuality had- and still does have in many places- trying to fake it in a heterosexual relationship is a thing that happens.

But the idea that I became bisexual the moment I slept with a dude at the behest of my then-girlfriend, when it was my attraction to men that both preceded that act and laid the groundwork for it to happen, is a borderline nonsensical proposition.