Does the Bible forbid threesomes?

I’m having trouble finding the reference.

Having spent the last four years in daily reading of scholarly material on the Bible and sex, I should put it to use? Let’s address some real-world scenarios! Say a bisexual woman who’s a member of Congress and in a threesome or ‘throuple’ with a husband and girlfriend has private photos posted to hurt her.

Is the threesome bad? I’ll expand the query. How about orgies. Bad?

Because I’m having trouble finding the verses saying so.

Now revenge porn, which I’d take to be a category of gossip, and seeking harm on another person, is clearly unbiblical. It is certainly unloving behavior.

Though not explicitly biblical, I should mention the rabbinic teaching that embarrassing others publicly is a serious offense.

But threesomes, or more-somes? Getting that condemned is going to be tricky. Let’s start with Old Testament’s law, often taken by Christians to be a sure guide to God’s intentions for sex.

There isn’t any mention of multiple simultaneous partners. But let’s start with the observation that Jewish law, in the Old Testament, is enormously in favor of sex. This is kept going by Jews to this day.