I made a mistake but who doesn't im still young but now im not sure what to do sp plz tell me!! i need help!?

I have long story but i will not type all this ive been 1 and half year with the girls im 18 now and she is 23 i met her when i was 16 we had very rough times and we got through all da time i never listen her when she told me live her room or she need personal space and i heat her before not punches but hard slap call how you want but i learned my lesson never never i will touch girl again never so finally 4dayz ago we had argument again and i slep her after that day was fine and next day we got argument again and she left to her friends house i was so angry that i txed her i will crush her had etc... i know i know listen story next trust me i learned my lesson so after that i comed down and texted her plz come home i will not touch you i will leave your room plz come back (she told me before that she scared of me sometimes she was kidding sometimes serious) so after cops came to her place and arrest me ive been to jail for 2days coz she call them and showed her marks scratches so now i come out i will have court after one month i can't see her at all other ways i will go to jail for long time im on bail now so why im so comfused is one side of me telling me that after court is finishing i must not contact her at all after what she did i can't trust her any more even if i change my behaver she can always play with me for example if we get toghether i do love her she might say do that do that and i f i do not she will say i will call da cops you know what i mean who knows so this side tells me don't talk to her any more or see her at all forget about her which is really hard because she is really good person and she done many good things for me exept this one but i just can't trust her anymore i mean i can but all my friends said that i can't if we will have argument again she will call cops again maybe but i belive she will not if im nice coz she feel sorry what she done and it's my fault now another side i think i already said i want back toghet with her after court which is one month start new relationship without touching her not even sceaming at her but all my friends told me that if she did that that she will do it again but i think she won't i love her and she is good person so what would you do stay with her aftre all dat or should i move on which is really hard and my had can't stop thinking about her but all my friends and my family siad that nothing good will happen if i continue my friends give me example they said for example take a door simple door and imagen that you spilt some dirty staff on it and you trying to clean it make a door new one again but you cant tru but what i think if you take this door and work at this maybe from this spil you can plus painting and ohter staff and this door will become much better then before unic door so im not sure what you say people sorry about my english i can speak good english ive been in new zealand 3 and a half years but i didn't see my gf i didn't eat for 3days today i feeling good i don't know why i eat and sleep good maybe i start worrying about my situation right now with court law etc not about relationchip but ofcourse i still thinking about it so what you think people