I feel so sad for you just now. How awful to be abandoned like this. In his cowardly way he’s showing you he doesn’t care for you now as he once did.
Sadly we’re not always suited with the people we love. You should know that you attracted him into your life and you will attract someone new when you are over your pain and loss. Do something nice for yourself each day. Find your passion in life and pursue that when you can. Get out into nature. Your heart will eventually heal and life will be good for you.