Perhaps this is your rebound guy? Not to belittle what you are feeling, but you couldn't possibly have felt more than "interested liking, maybe a spark" after a date or two? I think what you are upset about, is that he "rejected" you on a thing that may not have been an issue, ever, in your R, because you would've dumped him yourself before then. How much did you get to know him, really, except that he is brutally honest and rather tactless. He doesn't really know what he wants because if he wants children, then he should make sure he only dates women who don't have any and want some themselves.
But, your attention has been diverted from you XH, and maybe that's a good thing.
Just throwing it out there.
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim