Sodomy is a grave sin. It's an abomination to God. Leviticus 18,
If you know someone who is involved in this abominable sin, and do not warn him of its consequences, you're complicit. Ezekiel 33. Matthew 18:3. 1 Corinthians 9-11.
Therefore repent, while you still can.
Yes, you don’t Know. You know nothing about the rest of his character or what his life history was.
(What do you think about masturbation?)