I tried to be friends with my ex-girlfriend but she's confusing me. I'm thinking about no contact.

I agree with the other commenter. It would be best if you go NC. Her actions show that she's trying to get over you, but she is still emotionally attached (as she is also with her other guy). Since you're over her, then you have nothing to lose but all to gain by just keeping your peace by going NC. Your ex will be grateful for the freedom and space, if she cannot get there without your NC. I'm the type that cannot be friends with my ex so while it hurts for a bit, it's great that some exes give me no contact and move on in life. There is one ex who has not (even though he like you has moved on, in a long-term relationship with a new girl) and I am still emotionally attached -- miserably single b/c I just cannot yield to being drawn to anyone else. Sure, I've got to muster up the NC to save myself (and give others a chance. However, if YOU can, then do it -- it's better for everyone to go NC on your ex-girlfriend. That's just my 2-cents.

/r/ExNoContact Thread