I’m sorry, but I’m going to agree with XenopusTex. The fact he has “unresolved business with his ex” and that he liked meeting you are things somebody writes when they’re trying to let somebody down gently. (Which is very kind of him – some people aren’t that considerate.)

It is rare to meet somebody who is compatible with you, but not as rare as you think. If there’s one thing I’ve learned living on this planet for so many years is there are many people who we can be happy with.

You mentioned it had been awhile since you dated, so it’s understandable that this match had extra intensity for you, which makes it more of a challenge to let it go. Take comfort in the fact that all the hard personal work did bear fruit and you were able to attract a nice fella. And if you did it once, you can certainly do it again!

I would however advise you to take a breather to grieve the loss and examined what you learned from the experience.

Best of luck to you!