How do i get over what happened?

I asked a question on here a few days ago and basically had my thoughts confirmed - my ex boyfriend had sexually assaulted me a few months ago while we were still together. He broke up with me a couple of weeks ago, but ever since it happened i haven't really forgotten about it. Other than that one particular night where he scared the hell out of me, the relationship was fine. In the ten months we were together we never even had an argument. I'm in my mid twenties and he was my first boyfriend, i was too scared of losing him to ever bring the subject up with him. I'd be too ashamed to tell anyone this face to face, least on here i can be relatively anonymous. How do i forget about what happened?