I got sweatshirt revenge on my ex.
How did you exact revenge, and was it for breaking up?
My ex broke up with me so I think it's fair enough for me to get her expensive sweatshirt and write  'stupid bitch' on it.
I'm sorry your relationship ended when you didn't want it to, but you're just being silly and immature by just not leaving her alone. She may have hurt you, but you are just throwing a tantrum and if future partners saw this they wouldn't want to be with you.
What am I supposed to do, let her get away with it or just forget it and move on?
Trying to get revenge on your ex in this way is really petty and makes you look bad. It would be better to show strength and maturity and just move on.