Responses
But that was before they even started dating as a poly and their rules doesn't exist yet. It's not about he did it first etc in poly relationship it's important to have trust, communication, and follow the rules
If everyone agreed that no sex happens unless all three partners are present, then that rule is a trust agreement
or foundation for emotional safety. So, when two people knowingly break that rule, it’s not just “having sex”—it’s breaking trust.

This man keeps forgetting that they already had sex without him once. If anything they’re even right now and them having sex in the bathroom is making it uneven.