Libra man needs help with Leo girl

About 3 months ago I met this Leo girl and we started talking and talking. After a week we got reallly close because we shared a lot of information. We talked about almost every topic and I was realllly interested in her and really liked her the first time I met her. However one day it just went downhill... I asked her out after a week and a half I got to know her and she said she wants more time and wants to wait and I said it's okay. But on that same day one of her friends told me some rumors and I acidently told the true reason why I got to know her. Me and my friend were playing a not-so-big deal game on her where which one of us can be the most nice and ask her out. When she found out about this she got reallllll mad at me and didn't talk to me for a while. I was pissed at the fact she only got mad at me but not my friend although we both played it on her. I gave her some time to cool off and she texted me one day and I said sorry in a million ways. I wouldn't say she forgave me and I really should do something to say sorry. During March we talked once every other day in the halls about something stupid and just started seperating. She keeps calling me a ***hole and some other stuff. This kept going on till May (This month). Now we have completely seperated and she avoids me and tries to make me jealous by saying my best friend is adorable and stuff. I've gotten to the point where I should forget and give up but nah..... I have to do something.. This Leo girl totally resembles everything about Leo's and I have no idea what to do now.
Sorry if this is long but I just wanted to get it out of me..