Please help she is giving me mixed signals?

A girl I am friends with has been confusing me and giving me mixed signals. It's long distance, I met her back in June. We got to talking and both of us ended up feeling horny and having , which is something I regret. Anyways, she then told me she felt degraded and I told her I was sorry. So I contacted her a few days later and we kept the conversation short, I felt like she was still mad even though she told me she wasn't. Anyways, after awhile we just started talking again like nothing happened. We became good friends who would help each other with our problems. Well anyways, we ended up adding each other to facebook and what not. However we only talk once every week or once every two weeks. She never stays on AIM longer than 5 minutes unless she ims me and we talk. She told me the last time we talked(about two weeks ago) since we were both depressed that we should be there more for each other and maybe I would soon have a girlfriend and she would soon have a boyfriend(reason we were both depressed). Anyways we both agreed it was a good idea but I haven't heard from her since?