Most Helpful Girl
I believe you need therapy, for I understand you are a nice guy but I feel like there is something broken in you that she can't fix. You both need space and time apart. Not to get involved with other people but really see who you are without her as your own person. For if you don't get help, its gonna get worse and ruined the both of you. And not just with her, even if you were to find someone new, you would be completing the same cycle repeatly over and over again. I suggest you look inside yourself, for the saying goes "You can not love someone if you don't love yourself, for its always gonna it up toxic and utterly tragically dissapointing!" Hugs Bro, prayers and good luck to you both.