Saying you love someone and then breaking up, now that is confusing. Although I am much older than you, I still remember how important relationships are at that age when you first experience love. I know your heart is breaking and it hurts, but take a deep breath, take one day at a time and try to get through it. All things happen for a reason, maybe you two just need a break or maybe she is not the right one, who knows. But if you gave your best to the relationship and it didn't work out, I believe there is a better one for you down the road. I really can not think of anything right now that would truly make you feel better, but you are not alone. We all have gone through situations like this.
Hello and welcome to HealingWell. I am sorry you are going through this difficult time.
You posted "since I still live with her " If she has broken up with you, perhaps if one of you moved out or left for a time while you work through this it would be easier then living together like this. Seeing her everyday under these circumstances must be very painful for you and you need time to take care of you.
Talking with the members here, talking with your friends and family or even seeking out some counseling are good ways to help get your feelings out.
I wish you peace,