WHICH IS EXACTLY WHY I'm asking this question. We are way too quick to blame the man when something like this comes up. You're already using the language of victims when referring to this woman. FOR ALL WE KNOW SHE IS A SLUTASAURUS REX!! Please keep that thought firmly in mind. (or, you know. don't... eww...)
Anyway, let's try for a little actual gender equality here. They were both idiots and neither of them had any business doing what they were doing before and after the relationship, and the evidence suggests to me that either both of them are victims or neither of them are. Take your pick.