What can I do to fix my relationship or is it fixable?

My girlfriend and I have been dating for a year now we are both 19 and we have God at the center of our relationship. I came out of a very long and somewhat physical (no sex but we did other things) relationship that ended on sort of a bad note. You could say being physical for me is somewhat of a demon (I have had issues with controlling myself in the past). She came out of a nonphysical on again off again relationship. We both decided that we didn’t want to be physical with each other and she understood and was willing to help with my weakness (which is controlling the physical aspect). We are good with making out but no farther. One night I started kissing her neck which led to her chest. She said she liked it, but didn’t want to do that anymore because she wasn’t comfortable. But, it happened again and she decided she was ok with it. A couple months later we took it a little further with dry humping. That didn’t end well. She and I were upset for a few days but it passed over and it was ok. Now is where it gets even worse. We were making out with her on top of me and I put my hand where I shouldn’t have on the inside of her pants…She is now very upset at me and I agree that she should be. I tried to talk to her about it and she kicked me out of her room yelling at me to get out and saying she doesn’t want to look at me or even touch me. She also wants a break…My question is, is this relationship over? I know I have done wrong and I feel terrible. I’m ok with having a break because I want to do anything I can to save us. I want to save it because I know I want to marry her. I love her with all my heart.