Where does the Bible say homosexuality is a sin?

Question:

I saw your email in a Christian site which was also on homosexuality, I decided to write. I wondered if you believe it is a sin as I can't find any passages on gay love to show that it's a sin anywhere.

Answer:

A previous question, "What kinds of homosexuality does the Bible mention?" is closely related to your question. If you have further questions after reading the answer, please write.