How do I get over this girl and move on? (long question)?

My best suggestion would to not try to be 'friends' with her but at least a 'work friend', totally ignoring her won't fix anything, you'll always have feeling for her, even exes, divorced couples still care about each other. you just need to find a way to let those feelings or they'll build up inside you and then burst out (crying uncontrollably for what seems to be for no reason) boxing is a good way to keep your mind off her, basically any sport or activity that requires total concentration is a good idea. do them as much as possible, and wait for the next girl. I hope this helps and good luck.