Fucked up again?!

I think I fucked up...again!! I love my boyfriend so effing much I think we just broke up and I feel like I'm going to die. He doesn't want to talk, won't respond to anything. I don't want to be told that there's plenty of fish in the sea. I feel like if we really did break up I would rather die before even getting together with another guy it literally disgusts me and makes me want to retch! Is there any advice to win back a guy? Please no mean stuff I'm seriously not in the mood for bitchiness thanks all!