How do you handle heart break?

Currently I am dating a wonderful man. We have only been together for 2 months but I can’t see my life without him. He means the world to me and I’ve never felt this way before. I’ve loved men deeply in the past but with him, it’s different. The problem I’m having though is if we break up me not being able to handle it. I’ve been heart broken before, I am 25 years old, and I don’t want to date anymore. I’m tired and truly just want this relationship to work out. How do other people handle heart break? I feel like other people handle it with ease and get over it. I’m a complete train wreck. I’m usually devastated and severly depressed after. When I love someone, I love them deeply. I can’t imagine them with anyone else or I’d die! Does anyone else take it as bad as I do? I worry if we break up because I know I’ll be severly crushed. I’d be so heart broken that I don’t think I’d be able to handle it. I’m tired of my relationships not working. I’m glad they didn’t because I wouldn’t have met him but I want this to be it for me. He makes me so happy that without him I’d be very hurt.