I can't get over him!!

I was broken up with while being very much still in love. It's been 3 months I have cut all ties from him, I have deleted all pictures all conversations and all memories. I think about him every single day and I'm still madly in love with him. I do what I love, I go out with friends, I exercise. But he's never not on my mind and I don't know what to do. Please help me.