If he doesn't love you like he should then theres nothing you can do but let him go. I know it's hard, I know it hurts - A LOT - me and my husband of 36 years split up earlier this year. Like you I thought we were doing ok, then out of the blue he told me it wasn't working for him, I cried and begged and we spent 6 months trying to put the marriage back together - that 6 months was horrendous (brought me here) totally emptied my emotional 'tank'. He picked over everything I had ever done that hurt him - things I had long forgotten, things that I'd said or done in jest became weapons for him to use against me, questioned my every past move, questioned my motives and feelings then after 6 months, again when I thought maybe, just maybe we were starting to get somewhere he told me to get out, just leave. I was devastated, broken, after 36 years discarded like an unwanted toy. That was 6 months ago.
We are going through the horrendous process of a divorce I dont want and it still hurts. There are fresh tears at every solicitors meeting, every solicitors letter brings fresh pain and more tears, but there are some days (not many yet, but still) that are better, days when I can offer the world a smile. I've got through trying to believe that if he doesn't want me, then I'm worth more than that, I've held on for my mother, my kids, - my youngest is 12 and I think she needs her mum. Not allowing myself to suicide has been the hardest thing I think I've ever done, I've come so close so many times - but I try and get through a minute at a time, find some way to distract myself to get through the next minute. Being here helps, typing my story, responding to other messages, going to chat, all help get through the minutes.
There are lot of people here who are here because of break ups, they've managed to persuade me that IF I can get through there will be a life for me after the divorce.
I'm in the UK, I went and spoke to my doctor, he's given me anti-depressants and sleeping pills which have helped, I'm also now in counselling which offers an outlet to 'validate' my feelings.
Sending Huge HUGS, keep talking, keep posting, there is a life for you without him - you deserve to be with someone who loves you.