boyfriend of 4 years left me last night, I'm shocked

28F and he is 28M. I don't even know what to say. I can't stop crying, I can't catch my breath, I can't eat, I can't sleep. He just kept saying it's not right for me. It was mostly very unexpected. I'm completely wrecked. Most of our friends we have mutually. I don't know how to tell them. I just need some relief from these intense feelings. All i want is him. He's all I ever wanted. We weren't perfect, but we were good.