Ex~boyfriend help pleaseies?

ohhk so...im 13, hes 14, and we go to the same school. weve been together for 6 weeks and then he started lying to me, right in front of my face. he flirts with this one girl, and now he wanted her to make me jealous so he could breaak up with me, even tho he coulda just done it to my face bec i already broke up wit him twice. its hard getting over such a jerk, specially cuz he was super popular. i need some help to get over him/get revenge? >:D help pleasies and thankies.