the way I see it there are 2 options...
1) break contact... Don't text, don't reply to texts, dont answer calls, and do NOT drunk dial. do absolutely nothing. There is nothing they hate more than this. You can move on or not, she will never know, and this will hurt the most... for the longest time. she doesn't deserve your contact. This is probably the easiest on you aswell.
2) if you are really pissed about it.... and i mean reeeeeealy pissed.. ask to try again...be the best god damned boyfreind in the universe so she HAS to take you back... then when she is asleep inject her with a little heroin each night... a little bit more each night untill she starts to get sick when she wakes up... THEN tell her what you did, leave and refer to option 1