@StealthMama The OP started posting about this roughly 15 months ago.
Kindly, you have many threads going about this man covering many months.
I won't discuss them here but you know what they are.
It's not helpful to deny you met on a dating site now, unless your previous thread is untrue.
In all of them what you describe is your insecurity about his lack of contact, what he feels for you, the possible flirtation online with a woman of 26, his personal 'hygiene' for want of a better term, his suggestion you climb higher in your career (for his benefit longer-term, you wondered) and now, his 'parking' of a conversation.
I have the impression he's quite a bit older than you are . And academically you've put him on a pedestal.
But - and again I mean this kindly- you're reminding me of myself many years ago when I was full of angst about various men. I'd spend ages talking to my friends about whether they cared, where was it all going, etc etc.
When I met my DH, none of that applied. He was solid, straightforward, reliable, and invested in me (and we were long distance too. He once drove almost half the distance to rescue me when my car broke down.)
This relationship isn't for you. I appreciate you want to salvage it because you want children but it really doesn't look as if he's the one for you. His behaviour doesn't sound like a man who's really in love or who would give you the shirt off his back. You can do better.
You're trying to force it and he's wriggling like a fish on a hook.
Stop seeing what you want to see, and see what's in front of you.
Good luck and I hope you find what you want.