Unlike the bible, hinduism never tells that homosexuality is a sin or prohibited by Hinduism at all.
Hinduism is so scientific and it has puranas and Ithihas to model human behaviors in various stories or anecdotes...based on REALITY
thru divine revelations of Those rishis who compiled their work later on.
thou homosexuality might be repulsive, strangly, in hindu texts it says nothing about homosexuality.
though it may say that affairs outisde of marrige gay or straight is bad, thats just lust. it doenst belong under the category of homosexuality.
thats why im so fine being a hindu and supporting the marriage of two lovers.
you talk of behavior, have u realized that heterosexuality is a type of 'behavior'. both come naturally to man, whether u like it or not. theres nothing wrong.