She sounds... shady to me. Like someone who wanted attention without the commitment. Girls who are actually worth it don't usually play with a guys heart like that. I think she was keeping you around for the attention and benefits(kissing, affection) that she wanted on /her/ terms(notice: she wouldn't ever let you initiate any affection.) You guys were never really in a relationship and she's made it clear she is not into you. I would, uh, either walk away, or stay /friends/ and keep things as friends.
I would never mess around with a guy I did not have an intention of dating. She's said to you she's not interested in a relationship. Women don't usually kid when they say that, and her behavior otherwise proves it. I think she was leading you on. Don't take just my word for it, see what others think. These are my thoughts.