Chris,.
I fully understand where you are coming from. Sure, Hitler, Osama, and Sadam were immoral and God loved them. Yeah, He did make man and woman to reproduce. He made them different in order to do this. It's basically anatomy and physiology. And yes, this song is wrong on more than one level. However, unlike most, I have more of a problem with the drinking of the song than that of the homosexuality. Maybe it is because I am partial to that part.
And of course, lusting is immoral. However we do it without concern, at the time, because it is pleasuring. Although, that is not any excuse.
I don't admit that homosexuality, and bisexuality) is a sin because although I believe fully in every single thing in the Bible, I focus on what I believe God is telling me. Yeah, He's going to love me no matter what is happening, and I don't believe being bisexual is going to chance me getting into God to live an eternal life with Him.