Relationship purgatory

Ash

I’ve been with someone for 12 yrs I met him when I was a teenager and he’s pretty much been the only real relationship I’ve ever had. He’s almost 10 yrs older than I am. Lately he’s told me he’s not sure he still loves me and brought up some other personal issues that really hurt my feelings. He never pays attention to me unless he wants sex, if I try to talk to him you’d think I’m just annoying him and most of the time he never responds. So now I’ve met someone else. He’s 12 yrs older than I am but he knows I’m in this relationship and he says he doesn’t want to be the cause of a breakup. But it seems as if we were made for each other we have so much in common similar life experiences we both want the same things and we just get along so well and even complete strangers come up to us and tell us how great it is to see two people so much in love. And I’m confused as to what do. My new guy includes me in his future plans, we’re making plans, talking about xyz facets of our lives and how it will be together. Can anyone offer any advice?