Josephine you have said all that needs to be said here .
I've been around along time and can guarantee all here that this man is a psyco , his behaviour will degenerate into full physical and emotional violence in time . He has no doubt done despicable things to both his wife and kids in the past. and will continue forever . These types do not change and any woman who believes that they can change a man are delusional
Dump him , dump him now change your phone and if you see him follow you call the law , he need to know you won't accept his behaviour and visit from the law may be your only option . Sorry if this scares you but be strong and get your out strategy in place now and make sure all your friends know of your plan . Don't become a victim of this creep .