@Lilaclala
I just feel this means he doesn't love me as much as I love him, otherwise he would be willing to continue the relationship as it was.
This isn't necessarily true. You can love someone to distraction but that doesn't always mean that they are 'right' for you (and vice versa). 'Right' is a combination of time, place, and person and they don't always meet at the same time. And 2 out of 3 doesn't work.
Would a long term dating but not living together situation even work do you think?
This is the thing, it was always him who instigated conversations about living together in the future. He seemed so up for it.
He has also now said he doesn't want to live like that anymore regarding still seeing eachother but not living together. So it seems pretty final
Yes, I'd think it could be really great, but it has to be what both parties want. I have a friend who was seeing a man and was in the stage of trying to figure out if he was 'the one'. Then he stated that it was 'marriage or nothing'. As an 'older' woman with a settled and independent life, she had no interest in marriage. So she chose 'nothing'. In fact, to her his demand for marriage and the assumption she'd sell up and move into his home AND his life (rather than building a new life together) was a big red flag.
I'm not saying you're a 'red flag', but it would have been him moving into your life because you have children. That requires the other person to adapt 'into' the life of the person and their children. I just think his talk about living together was a nice 'pipe dream' for him but when things got too 'real' he realized what he would be biting off and it suddenly became too big a chunk to swallow. This isn't your fault, it isn't his fault. It's just dream vs reality and thank your lucky starts he 'woke up' in time. I know it doesn't feel like it, but you will eventually realize that he did the right thing and you will be grateful that he didn't totally disrupt your and your children's lives by moving in and then realizing he'd made a mistake.
He has the right to say (as my friend's ex-bf did) 'all or nothing', meaning in his case that he wants a 'live in' relationship with someone with no children. Just as you have the right to say "We are a package deal. Love me, love my kids".
I think rather than wonder 'will I ever meet anyone' you need to focus on the life you have now with your DC. Learn to love being alone and being self-fulfilled. Learn to love having no one to answer to or make plans around. Once you've done that, perhaps you'll meet someone who is willing to fit into your and your children's lives.