If you give into the temptation, and claim yourself gay, then it is a sin. As well as the acts. It is not acts alone, but the giving into the thoughts and giving into the perversion. Otherwise, how can perversion exist according to Christianity?
So you think it isn't wrong to be homosexual and support it and believe and "be" it, but it's only wrong if you physically do the acts.
Do you think only physical actions can be deemed sin in regards to Christianity, but not thoughts/belief? That is different from temptation because you fight such immoral notions.