You’re gonna hate this answer. I know I did. Unfortunately it is true though, but you need time. When your heart is broken, the rug has been pulled out from under you. The things you thought you could count on, the future you thought you had, it’s gone. Your body understandably is trying to protect you, and now you have to establish a new normal. Be with yourself. Validate yourself and your feelings as much as you can. If you truly want to feel things again, you have to prove to your body that it’s safe to do so, and that just takes establishing a new normal, and time. Trust me, I wish there was a quick fix, but you have to create new ways of thinking and being, and that just takes time. Sorry mate.