How to get over heart break?

Any advice? It doesn’t even seem like he cares and I just find myself trying to call him only for my call to go ignored.

I don’t even know how to handle this. I don’t have any friends to distract me. We had plans to live together, to do things this summer, everything. I’m just so lost. And I don’t think he’s going to come back. I think I was more into him than he was into me and that always happens to me.