so angry!!

Yeah, you're probably right. But he keeps saying.. whenever I bring the past up.. that I'm looking for something to be mad at him with. He's like, "Ashley would I give a key to someone I didn't love? I gave you a key to my house, I wouldn't do that to someone I didn't care about." etc etc. I don't know what to do. I do love him, but I hate the fact that its three years I've wasted. I absolutely, hate that the most.
I just don't know how to break it off with him. He threatens to come to my house, and make a huge scene if I decide to break up with him. I bought 384 tickets to my christina aguilera concert and we had to leave early because he argued with me in the concert arena in front of everyone... all because I was texting my sister (who was also there) So I told him (to save any more humiliation) that we need to just go. Then he made a complete a$$ out of himself outside and yelled at me as went to go look for my car... I guess, as I write this, I know that our relationship needs to end.
What I don't know how to do is figure out how to completely erase him from my life?