Confusion

It has been over two years for me and although it’s much easier I still find myself just as confused now as I was in February of 2019 when this all transpired. My husband and I are high school sweethearts we met the summer before our sophomore year, ended up having classes together and hit it off almost instantaneous. Looking back now I can’t help but to think maybe that’s where we messed up we never allowed each other to grow up and experience life without the other. I try and stay away from the trap of regret (easier said than done!) but anyway 20 years and six kids later I find myself thrust into single parent mode because my husband decided he was no longer in love with me. I have no one to talk to about this so instead of continuing to Google search I created an account to get some sound advice. What makes this situation confusing is that my husband doesn’t want a divorce, still uses terms of endearment, we still have great sex, but he doesn’t want to live at home or engage in relationship talk, thoughts, or anything of the sort. And not to mention he tends to act in a jealous manner but states he doesn’t care whether I’m with anyone else as far as dating goes. I would be lying if I said I didn’t love or miss my husband. I just need some sound advice! Please help me