Bro, no matter how you look at it, as much as people say that revenge is sweet, it is actually bitter. Forget about revenge. Look, relationships are just like foods. Bad relationship is equivalent to the shit/poop that you let out everyday (assuming you have a good bowel movement) and good relationship is equivalent to the good nutrient that your body take in.

Find another girl. There are lots and lots of girls turning 18yo every year, just to make my point that the chain is continuous.