Thanks for that, you really cheered me up. I'm back singing now (usually sing daily and I stopped after that email).
I figured he was interested to start with and then had self-doubt. I shall just act friendly but with no sex.
After he sent me that horrible email, I basically told him to get lost in a less than polite way and I told his father everything that has been going on and spoke to ex-ow, AND I told him to go when he brought the kids round with flowers before my birthday so I was expecting him to be FURIOUS and not speak to me for weeks (which would have been his usual response) so this is a total 180 for him.
I'm thinking there has to be some interest there if he has just ignored all that and the flack he must have got from his family. My guess is he probably panicked because I was so angry and I told him this was the last time he was messing me around and I was never sleeping with him again.
Maybe he now regrets what he did and realises he was a bit rash.
I shall just try to go with the flow but without the ML.