How long does it take to get over a 3 1/2 infatuation relationship?(my ex broke up with me)?

My girlfriend broke up with me 3 months ago but I'm just accepting it. I cried and begged for months. Got mad and did Alot of hurtful things to my ex out of hurt and anger and now she pretty much hates me. I now realized that I was infatuated with my ex all this time and not really in love. But I still miss her and the relationship. Also i tended to be controlling and very jealous.(other signs of infatuation).