I have a girlfriend but..

But I don't know how I feel, I already have a hard enough time to get out of bed in general, i tried to break up with her, but every time i try, she just kinda says no and that she loves me and if i love her i'll do better, but, i have no motivation to do so, i use most of my motivation on work, and then she's asking if i want to hang out, but that's when my battery is low and it's past 9pm, she hardly texts me throughout the day when i'm not busy, but whenever i'm busy that's when she actually wants to hang out with me, and she has my work schedule, i don't know what to do, i have so much love for her, but i just feel like everything on me right now is killing me mentally and physically..