My friend has depression and I feel completely drained, physically and emotionally. I try to be there for her and I would do anything for her, I love her so much. I'm finding it difficult to remember that the things she says sometimes are not intended to be hurtful, they're because she's unwell. I feel like I'm giving everything I have and it's not sustainable. We haven't spent time together for months and most of the time we spend talking is online. I miss her. I don't really have many other friends, I'm single, and I'm lonely. Not that I could tell her anything like this. I feel guilty for feeling this way. I'm supposed to be her friend.