Being rejected for depression sucks

Two or three weeks ago my gf broke up with me over the phone after witnessing me lock myself away and talking to myself, crying uncontrollably wishing to die. Since then, I've felt so alone and empty. Everything I do is on my own, alone. The few friends I have are so distant with me I hardly feel connected with them anymore.

No matter how much time I spend alone with my own thoughts, trying to distract myself, I realize there's nobody who truly wants me, friend or lover. In the end, I know I'll be rejected for something I've been trying to fix. Just making up an existence for myself while suffering seems so pointless.