Me & my gf brokeup. i need her back?

well, the day before yesterday we argued & didnt speak all yesterday until night time. she was acting weird like sad so i asked her what was wrong. she told me she was depressed. here's the first thing i thought of. we argue alot but we pove each other sooooo much & we always breakup to makeup & i thought that was one of the biggest things depressing her. so i told her maybe we should stop. she was torn. she got so sad and angry to the point where she told me to delete ber number. soon enough she texted me again after telling ME to delete HER number. i see now that maybe that wasn't the best choice i made. I explained this to her , how sorry and stupid i was. & now she's saying she has mixed feelings? she said maybe we should stay on this break and grow closer & appreciate each other more. but i cant do that. i HAVE to be with her. ever since she told me that, if seems like every time my heart beats it stings. i dont know what to do. we're very close but when she's sad or mad about something i did, she'll never tell me why. what do i do? i need her back. i mean 24hours ago she would have wanted me back & now she wants the break?! help me understand & tell me what to do.