I haven’t seen her for years, but a lot of my friends are telling me she’s had 1 of the biggest ‘glow downs’.
Your friends sound horrible.
Maybe they should get new topics of conversation, rather than bitchily, gleefully relaying that someone's looks have degraded.
Are they telling you to try to make you feel better because you've gone on at them about your h having a crush on her?
Your h was inappropriate telling you he had a crush on another woman. He's either a loose lips, filter less, idiot. ..or he likes making you feel insecure and like you're in competition.
Your response should have been "I know what you mean, I have a massive crush on x", or better still "well, give me good notice if you want to leave sweetheart".
But the fact he was telling you this was an indication he's a wanker and idiot .
Instead however you seem to have fixated on his crush and whether he'd leave you.
Oh and as for him saying "he'd be with her if he was single but he'd only have sex with her til he got past his attraction" .....
How exactly does he know he'd have the chance? How does he know for absolute certain she'd get involved with him? How exactly does he know she wouldn't have other prospects, or find him a crap shag and not shag him again, or any other scenario? How does he know, if he tried the shit he does on you ..talking about his attraction to other women and triangulating her with another woman, that she wouldn't be the type to say "gtfo, off you go then, dickhead".
He seems to think he's god's gift to women .... And unfortunately he seems to have convinced you of that too.
I think you said in your other reverse thread that he's aging well/relatively good looking .....
Are you insecure because you not the the same league now or something?
If he didn't talk about other women, you wouldn't be so insecure, even if you were not in the same league ...(Which I doubt anyway).
There are plenty of couples are aren't in the same league but loyalty, history, attachment, parenting, investment, "love" etc is very important so it's not a simple, shallow, cold "he/she is not as objectively good looking as me now, so I'll be off if I get the chance".
But I'm not convinced you are in different leagues anyway; I suspect he's one of those men who likes to have his partner insecure and like she's lucky he's with her; single feels good and in power.
The dynamic in your marriage is extremely unhealthy.
What I'm not 100% sure about is who is driving it.
You're almost pathologically fixated on your his "crush", which he shouldn't have told you about in the first place.