Thanks Byz.
I have issued him written to him again. (seeing he hasn't ended it with her)
He said that he knows there is no chance I would take him back so he doesn't know why he sent the message other than he wanted to tell me he misses me and misses us.
I replied in a text with "I would take a chance with you again but by god you need to talk to me in person. Either you want to see what we could do or you want to be with her. You had no problems leaving me so why so hard to leave her or just tell her the truth. I can't be in limbo on this. Either you love me or you love her"