Im trying so hard to be posative today

He called me yesterday after texting me the night before saying he had a lot of crap going on in his head and what a lucky escape i had getting away from him.And now im starting to believe him.he then went on to tell me his ex says she dosent want the ivorce to go through and she thinks about him all the time.oh and apparently she slept with someone 6weeks ago but straight away realised it was a mistake.Why would he tell me this? is it not enough that he broke my heart but he seems to want to jump up and down on it.Im really trying to stay posative and think of all the reasons i dont want to be with him but im still getting the odd moments.I havent heard from him since and i think this is a good thing because i struggle with not responding.