Most Helpful Guy
Exs and exs for a reason. Unless you both have fixed all the issues you had it won't work and will go back to the same old thing.
You should spend your time with school, working, and maybe meeting some other guys who later on might be more compatible with you.
I will never again in my life go back to an ex. I did it once and it was a complete waste of time in the end.
Take some time to find yourself again.
Most Helpful Girl
Make a list: of the things you want, the things you need and the things that you think will come from the relationship, also make a con list. All the things you didn't like about the relationship. Don't try to glorify the relationship. Really think about what brought you to the decision to end it and whether you are willing to put up with those things again. Good luck :-)