What other ways was he abusing you?
I am familiar with the cycle of abuse...I learned about it in domestic violence class and I was with my addict when i took that class. We had this handout...about the signs that someone is abusive or could be abusive to you in the future...I checked about 10 out of 20 and was STILL in denial even though I knew deep down that even though he could be incredibly loving and fun, he was not good for me the rest of the time.
I have been married and divorced once and I know how confused and conflicted you must feel.. Give it a little time and maybe some counceling at a domestic abuse center. You don't have to make a decision until you are comfortable with it.