There isn't a single place in the Bible that says explicitly that it is a "sin" for 2 guys to be together. There is a place where it calls it an "abomination", but not sin.
There are exactly ZERO references in the Bible about women being with other women.
Me? I personally think that if you follow the 7 Noahide Commandments, or the 10 Commandments, you're pretty much good to go to enter Heaven, as both of them say basically the same thing.
And....................I think the Commandment that people have the most problem following? "Thou shalt not bear false witness."
^No offense but that is not correct;
"If a man lies with a male as with a women, both of them shall be put to death for their abominable deed; they have forfeited their lives." (Leviticus 20:13 NAB)
It says we should kill gays just like the Kuran. Progress isn't always a bad thing is it....
Like I said, it calls it an abomination, not a sin.