Having gay sex isn't a sin? Did someone rewrite the bible when I wasn't looking? Leviticus 18:22, part of the law given by God to Moses, states "You shall not lie with a male as one lies with a female; it is an abomination" .. and Leviticus 20:13 says "If there is a man who lies with a male as those who lie with a woman, both of them have committed a detestable act; they shall surely be put to death. Their bloodguiltiness is upon them" ... this sexual act can be found in the scripture between having sex with your mother-in-law and animals.. both of those I'm sure you'd agree on being detestable. but you're saying it's ok to have gay sex? I looked over the hebrew text for both of those passages, and unless you have some knowledge of hebrew that countless other scholars don't, you'll be hard pressed to convince me that God didn't make it pretty plain that it is a sin.

Just because Jesus came and brought forth a covenant of grace, through which we can be redeemed and not live under the Jewish law, doesn't mean God changed his mind about what constitutes sin.