<human>: Alright, so bit of background, both were only 16 when we met in high school, yes we we're young and all that I know but, we clicked, really well! So we're both 20 now and she's left me. We were having a little bit of a rough time but she made it out I was awful to her when I may have played a few unfair jokes etc but all in jest, and in comparison to what we've both seen other guys do it was nothing. Also, had a pretty bad medical condition these 3 years and she's been there, been understanding and superb with me about it. We've been through a lot. So anyway skip that, it's now 3 weeks later, she's still not interested in getting back with me, however, plot-twist, she still has feelings and she's fighting them and I know it, not being big-headed but she accepts that we work well, that we had lovely times together etc and some nights I'll text her and it leaves her unsure if she's done the right thing but then she wont agree for me to take her on a date again and try to show her what we have really is amazing. Also we met up a week after we broke up, she was fighting me stroking her hair, she liked it but didn't want to, also kissed me so I mean, you don't do that when there's nothing there surely. Tbh, she's treating me like I've murdered all her family when I did nothing wrong it just got a little dull I guess. But I need her back, how do I do this? I genuinely feel she's perfect for me.

Can you condense the text into a few key points?
<bot>: Girlfriend left me 3 weeks ago after 3 stupidly happy years together, now treats me like I'm nothing to her when I did nothing wrong, need her back but how?