Moving on

Ever since me and a guy I’ve been talking to for 10 months stopped talking. We talked everyday and he easily became my person. But I’ve been a sad emotional mess. I can’t stop thinking about him. We ended on bad terms. All I want is him but I don’t think I’ll ever get him again and it makes me cry. How do I get over this? I can’t sleep, I definitely can eat (actually to much) and I can’t concentrate on anything. Should I seek out a rebound? Something to distract me from him? I honestly think I was falling in love so to get this ripped away from me is hurting me deep inside. I miss him. But how do I move on?