Plate 1 found out about plate 2 last weekend at a party, but I managed to handle it and told plate 2 to leave since since she already planned on leaving. Last night, some dude brought up plate 2 in front of plate 1.

Plate 1 texts me a few minutes after I get dropped off with:

"Tomorrow I need you to tell me what I am to you, even if that means you telling me I'm not anything."

"This is for my own fucking sane. I don't wanna be around you if your having sex with other people"

Sounds like a nuclear shit test.

Side note: I played aloof and told both of them I didn't know what they were talking about when I talked to them 1 on 1 last weekend.