I invited a girl that I was interested in to one of my fraternities parties, let's call her Alice. A long time plate that I'm supposedly unexclusive with shows up even though I didn't invite her, lets call her Chloe.

I ignore Chloe half-heartedly, say hi from afar, but other wise I'm talking to other girls and Alice. Chloe starts freaking out to my bros, and I decided to leave with Alice, though she never saw me do that. She's apparently really upset, but I don't really give a shit.

How do I handle the upcoming storm, as I intend to continue fucking both of them?

Do I state that we aren't exclusive and that whether or not I hook up with other girls shouldn't matter to her, and that she should have expressed concerns with this earlier?