How does one forget about a love... one that needs to be forgot?

Well, yes, it goes away, but you have to contribute for the transitional period to be successful. Because the information you've provided here is insufficient for me to give you a good answer, I suggest you talk to a friend, a hotline if available, your mother if your relationship with her is close enough, or, if you're the reading type and only if no other options are available, read the Sequences( wiki.lesswrong.com/wiki/Sequences ) to better determine what to do in order to rectify the problem.