I think everyone can relate to having their heart broken. I've been there and I know how badly it hurts and how confusing it can be.
I think you are on the right track, though. Keep going to meetings and looking after yourself. And you have to remember that sometimes things happen for reasons that we can't really understand at the time. When we're in pain, sometimes all we can feel is the pain. We can't make sense of it. But with time comes a different perspective.
What I do when I'm hurting is I try to take care of myself as much as possible. There are behaviors that help me heal and behaviors that are destructive. I try to keep active with the good stuff as much as possible. I keep a journal, I paint, I go hiking, meditate, pray, cook, go to church. All these things are good therapy for me. The more I focus on my healing, the more I find I have some peace.
Panther