Gonna play devil's advocate here, as ironic as that adage is in this scenario. Keep in mind that this is more for the Christians present. I hope that we, as people of faith, can have an honest discussion about this.
As far as I'm concerned, the Bible is pretty clear that homosexuality is a sin, even in the New Testament. Read the verses from Romans, Corinthians, and Timothy if you don't believe me.
https://en.wikipedia.org/wiki/Homosexuality_and_Christianity
Now here's the deal. It's true that Jesus' purpose was to free humanity from the burden of sin. But that doesn't mean that sin doesn't still play a role. In order to develop your relationship with God, you have to strive to become closer to Him. Sinning keeps you from doing that, and the worst thing you can do is to claim something
isn't sin when it actually
is. Because ultimately, if you're bound by sin that you don't even recognize as such, your spiritual life is toast.
In the end, you need to ask yourself whether you're following God's will or your own desires. Are you really practicing God's laws, or are you making exceptions for the sake of convenience or pleasure? I think that's a question that we as Christians need to ask ourselves constantly.
I'd go into this more, but I think it will be more effective for me to respond to the comments this will no doubt garner.