Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.
Many of the members of the support group were still quite unwell and not taking their meds. Some of the behaviour was quite unhealthy as they were not recovering as well as I had. I lasted for six weeks and then felt I had to leave.
However, for your own sanity, I would think about what kind of boundaries that you want between you and these people, especially with the girl you are taking about.
You don't have to be mean, but if she is texting too much, just ask her to cool it with the texts because you don't have unlimited texting...when she tries to involve you in her problems, just say that you'd be happy to be a sympathetic ear, but that her boyfriend is her problem and you will not be getting in the middle of it. If you meet up with her, say you only have an hour and stick to that time frame so she doesn't trap you in an endless tirade of her problems.
Boundaries like that can help you keep your sanity and communicate to her that you are not someone she can walk all over. And if she really is a "revolving door", she might get bored with you soon and move on to someone else.
Tether her. Tell her the truth. Be her friend: a real friend, who tells the truth.
Engage or disengage. But don't judge her, because there but for the grace of God go you.