So I'm beginning to have a huge issue and have no idea what to do. I (21m) have been dating a girl (19) for about four a half years. We went through so much shit with her family and me going to college while she's still in high school. Made it long enough and now it's her second year here. She basically lived with me last year so we decided to move in together with some friends this year. Problem I'm beginning to have is I'm not attracted to her at all. I never want to have sex, when we do have sex I have to try so damn hard to finish. Incredibly lost in what to do and don't wanna screw myself over or ruin what we have or could have.

Tldr: been dating a girl 4 years and am no longer attracted to her