SS, I was not a chaser when I was younger, but very much wanted, the house, the yard, the kids...everything I'd been taught that was marriage. I have noticed, that many couples on here were left without the kids, though, as were we...and I've always wondered about that missing piece and if there is any correlation to the MLC? In my case, I suffered 4 miscarriages, and he never seemed to handle those disappointments well. They put a lot of strain that other couples have never had to face.
You mention being love bombed by your ex, as was I, but of course, at that time I didn't have a clue what love bombing was...or that it was a huge red flag. Only after the runaway ran away did I come to learn it was a purely narcissistic trait having more to do with supply and attention, nothing to do with actual love or connection. So, of course it makes sense when things got tough, he checked out emotionally and eventually all those things built up into the ticking time bomb inside him that became a bomb drop.
As far as hesitancy in pursuing new Rs, I see it more as doing a better vetting process. Throughout the dating process, I always looked for actions to match their words. My ex was notorious for grand ideas and words, always had a new "plan" that was more like a scheme and never followed thru completely. He'd start many things and never finish a single one. I knew that of I were ever to marry again, this guy needed to be a man who could do what he said he was going to do. It took a lot of searching to find him, but it was worth it.
I will say that I have always has an independent streak, and being with an avoidance personality like my ex, that was not a good match. I probably did a lot of things he didn't like, but had no way of knowing that because he would never broach the subject. There again, things he let build up with no expression of them until it all came to a head.
I can look back all day long and try to untangle the skein of where things went wrong, but to me, that serves zero purpose because Humpty Dumpty cannot be repaired. I chose to take the lessons learned and apply them to the present, in the hopes of securing a more stable and thriving future.