How long does it take to get over an abusive relationship?

That completely depends on the person, and partially on the level of abuse. Some people never get over it fully... but that is okay in some ways too. Being a little bit more sensitive to the signs of abuse can help you in the future. The main thing is to get over it *mostly* ... by starting fresh, or moving on, or whatever you can do. Reading some good inspirational books, or self-help books... or actually anything you are really interested in can help. Finding new friends, or talking things out with old friends or a counselor can help. Watching some tear-jerker movies can help... just because it is kind of cathartic... gets you to cry and let out some of the emotion that we all bottle up sometimes. Give yourself time, and remember... even when there are bad patches, it doesn't mean that you aren't making progress. It only means that you are dealing with it on another level. Sometimes there are a lot of levels... but it does get better, even so, day by day.