First filter!
According to my education of the average human female behavior à la Mean Girls, then yes. Yes, there are.
It is highly possible that you should stop dating people who try to kill you and/or your loved ones.
And then we have our third mysterious boy-toy, who sounds like he's waaaaaay booked into the emotionally unavailable corner. What's he like besides all that? He hasn't tried to make with the stabbity yet, has he? Cause emotionally unavailable or not, my money is on this dude if he hasn't.