Ran into ex today, she text me after.... Confused?

If you can't even remember why you broke up, it probably wasn't a very important reason so honestly, it's very possible that she still likes you, or that she is at least attracted to you. If you are still attracted to her or if you think that a relationship is a possibility again, probe her a little more and see what she's thinking. Talk to her, text her, call her.. Otherwise, leave it at that conversation and don't contact her again. It's all in how you feel and what you want out of it.