Hi Unforgiven-
It may be him?
There's no way of knowing, although communication from other women who know him, or him, is not something you need right now. You mention you ended the relationship, and it is common to be spinning at this point in your detachment; it's best to take care of yourself very well right now, and block all of the ways he can contact you, so you can give yourself time and distance from him, so you can get your feet on the ground and heal. Take care of you!