Drunk and stupid argument with the girl

Sorry in advance for a long story. So Boxing Day (yesterday) I had gone for dinner round a friends house getting a little wasted then we came back to mine where my complicated girl mate come to. Before I start on what happen let me just give a cliff note version of our story. So she was in a relationship for 5 years the last year of that she spent more time with me than him. Eventually she dumped him and me and her began to slowly progress into something more than friends. For me I was the guy who slept with girls and never see them again so when she wanted to sleep together after a month I was like look I want us to be something more than what I've had so can we wait. Fair enough. So we slowly progress and I got a massive cancer scare beginning of last yr. this made me as it would anyone worry and think about life. Seeing the direction we were headed I started to move a little quicker than we were and she backed off eventually sleeping with someone else there were several occasions of flirting etc that wound me up. Eventually we or I said lets just stay friends of anything happens it does but I also as did she promise not to pull girls/ guys while we were in each other's company. So last night she's round mine my mates there I decide okay fine I need to air this out now she'd even funny with me for a while. So I tell her exactly how I felt and didn't let anyone get a word in. She stormed out of my house my mate chased after her as did I in the street we are talking and people are walking past looking so I ended up shouting at them anyway I don't remember much after but was told I called her a slut and repeated myself 4-5 times getting aggressive and louder each time. I feel bad cause she said she felt intimidated but I assumed for how protective I am of her and my friends she wouldn't feel like that I asked her why she said she don't wanna be with me now why get jel when talking or seeing other girls and loads more I feel terrible now and don't know what came over me I've apologised and made my case but rightfully she's not accepting it I feel so bad but one good thing is I don't have any feelings for her anymore but I don't wanna hurt her or upset her I wanna make it up to her