I still love my ex and i need her back as my girlfriend any suggestion on how i can try?

i ended our relationship on friday during half term because i was being a **** towards her and i thought that she would be better off with out me, i still love her to bits and i have relised since dumping her how much i love her and need her in my life, she has told me that she doesnt no if she loves me but i think that she is the perfect girl that i could imagine for and i need in my life. i have rung her to tell her how much i love her and wrote her letters and little paragraphs to her to show how much i love her and need her back, i never used to do any of that while going out with her. any suggestions on how i can get her back to be my wonderful girlfriend?