They don’t enforce rules about sex between tourists / western expats unless someone involved brings it directly to law enforcements attention and asks for their intervention.
Don’t let anyone know you’re gay or the victim of sexual assault. But consenting sex between two middle class non-Muslims behind closed doors is a complete non issue.
> unless someone involved brings it directly to law enforcements attention and asks for their intervention.
Sure sounds like it.
This looks like a sort of dystopian version of the quote: "If you give me six lines written by the hand of the most honest of men, I will find something in them which will hang him".
Meaning everything is non issue until you have problems with someone, at which point they can just put you in jail because you've been willingly breaking the law even though it was a "non issue". Why anyone would choose to live under these conditions is beyond me.
For my part, I would never travel to a middle eastern country for any reason, specifically to avoid the possibility that something I never suspected could be an issue, becomes an issue.