Definitely. It also depends on what variation of Christianity you're talking about. If it's one of the stricter variations, I'm not so sure. However, I am a Methodist, which is a branch of Protestant Christianity (at the lenient end of the spectrum). It does say somewhere in there that being gay is "a sin," but it also says being jealous is a sin, so if I like your art and I say I wish I had your talent, you could say something like "omg that is a sin y'all need Jesus"
Also, I believe many many parts of the Old Testament are to be taken metaphorically, not literally, so you can take the lesson out of a story instead of "okay so this guy lived 657.976467 years"
This is all my opinion, like I said, it all depend on how you personally interpret the Bible. In my opinion, I'm no homosexual, but if you are, great for you, just don't go shoving it down people's throats just like plenty of heterosexuals do.