I don't fully understand your situation right now so please elaborate on the following:
Do you still live with your ex? or has she moved out?
Do you rent the house you live in? Are you financially stable now?

If I were you, just to avoid all the shitty conflict I'd move the fuck out SOMEWHERE ANYWHERE away from her..

But breakups don't have to be shitty and spiteful. Mutually agree to just leave each other alone.

Move away, get a better job, do an Open Uni course (funded by government), get a cheaper car, you're guna need the spare cash for dating hot chicks!

Anyway, good to hear you finally broke up.. how you holding out?

P.S DO NOT GO BACK TO HER. IT IS NEVER WORTH IT

Good luck dude