On the toning things down: ex has made the comment b4 that he can't live up to 'my' standards. Whatever that means??

Ok, the w/e has been quite an event. Dd24 came up to visit her sis who is currently living w/her b/f's parents and ended up getting thrown out of their house yesterday! Long story, but it's done and she is back in Mich.

Ex didn't call all w/e, remember I told him not to? But then I'm sure he knows dd24 was here also. He just emailed and I am really not sure how to reply.

....how things? 'dd' made it home. would like to talk about me come to see all of you if could some time 'Ex'

Ok, he actually signed it w/his initial, which surprises me. We used to call each other by just that and he stopped that since seeing ow.

Any advice here? Do I let him stew for a few days b4 answering? I'm not sure if I'm ready for a visit yet. Help! How do I know he is sincere? And not just using that excuse to get me to talk to him?
T