I'm going to have relations with my ex
Why do you want to have relations with an ex? Do you hope to have something different happen?
I want to see if I made a mistake and maybe get back together.
There was a reason you broke up before and that should be respected. You should not pursue someone you do not intend to have a relationship again.
We broke up often so it's not a big deal.
It can be bad for you to return to a relationship that didn't work out the first few times. You would be wasting time when you could pursue a relationship that would work out.