How To Get Your Ex GF Back?

My Gf broke up w/ me about 2 months ago. I treated her well and she really didn't hav a good reason 4 leaving me. She told me I was the best bf she's ever had and the sweetest guy she knows but I think there was too much going on in her life and she didn't really want a bf. She said she likes me but she just don't love me. I haven't called her in at least 2 weeks. We really don't tlk but we say hi when we see each other in school and stuff. I'm really in love w/ this girl and I've been tryin 2 move on 4 the past 2 months but I can't. What's the best strategy 2 try and get her back? I've just been giving her a lot of space but i think it's a little too much space. She lives down the street from me so we're on the same bus but I don't sit w/ her. Should I? Idk if it's best 2 just keep wat i'm doing or try tlking 2 her. I'm a really quiet person so I'm not really sure wat 2 even say. I'm also afraid she'll get mad If I bring up the fact that I want her back. Wat do I do?