As your story goes, both you and her didn't know what you wanted. She was, literally, finding out if you were the one. You 2 clicked for a reason, but don't let that fool you. Sometimes our heart wants something that our brain doesn't. You have to think about the consequences of your final decision. Is it going to end as always, with her going out with others?, or do you believe she change and you're sure it won't happen again?. Monotony is something that's always present in a relationship, so if you end up going back with her, try to both of you understand each other. The more you know about yourselfs, the more the trust will evolve. Kudos