So far, I'm super confused about what the heck is going on

First, Jace is acting super weird, I mean, since when did he get dreams about killing Clary? (At least that's what I understood, pls correct me if I'm wrong)

Second, why the heck is Simon dating two girls (Izzy and Maia) without telling them 😭😭

Also, I feel like either Kyle is a bad guy or he's going to get murdered for being with Simon or something. Also, Camille seems pretty fishy, and I don't like Raphael. Maybe those mugglers (or whatever gang they are) have something to do with them. I also have a theory that Sebastian (or Jonathan) is coming back. Maybe he's the one killing the Shadowhunters.