Me (17m) and my girlfriend (16f) ( long distance) broke up a while ago, but we still acted as if we were together alot, telling eachother i love you and everything. My mental health got really bad and it kind of ruined our relationship, and i feel horrible. I told her i would change for her many times and i never did, but i really wanna do something this time around because ive really realized how bad i messed it up. A couple days ago we argued a little bit and she said that she still likes me but she just doesn’t see anything with me anymore. I really wanna fix things with her because she is a really good person and ive never met anyone like her. I know we still have love for eachother but it just isnt as much as it was in the start, and i really wanna show her over time i can change for her, id really do anything for this girl. I want to know things that i could do to show her that i can really fix myself. It hurts so much seeing her basically forcing herself to start to push away from me. We’ve broken up multiple times in this period so i feel like itll be so much harder to try to win her over again, but this time i really wanna put in max effort for her, she stuck with me for so long, but i had a weed addiction and i was smoking daily which messed with my mental health so much more. Ever since she told me this ive stopped smoking because i know how much it ruined everything between us. I really love her with all of my heart but i wasnt there how i should have been. If someone can give me advice for this, please do. I cant let go of her, i feel extremely guilty for everything. We went a couple days without talking but yesterday i got us talking again and things are feeling slightly better, atleast for me. We used to call every night before bed, and she doesnt even wanna call me now because she knows that we will get back to how we were, and that we might fall in love again. I know me and her are young, but i love her with all of my heart and ive never had someone care for me like this. I really want to do something now, and if anyone could give advice for this it would be greatly appreciated.
TL;DR: mental health was bad and this girl still likes me, but is forcing herself away from me because she thinks we may not be right for eachother due to mistakes ive made