15M and i am dating a 16F and my relationship is falling a apart any tips on how to save it ?

How to save your relationship ship when it's falling and it's mainly because of your past ?

SO I am 15-M and she is 16-F i dated twice before dating her and now she is ignoring me after getting to know about my past and i am saying sorry sorry a lot. I never talk about my past relationships cuz i don't want to. I find it shit and it makes me feel sad too sometimes. That's why I avoid it As much as possible. I was so happy and was thanking God that i got her in my life. I love her but she would now probably leave me cuz of my past. I never thought my past would matter this much My relationship is just a week and i think i won't be able to save this sadly no matter how much I try I am way too dumb and i shouldn't have dated again fr

I don't want her to leave me cuz i would be lonely agai and i don't want to be lonely