I Wondered If I Had Left Too Quickly

The first time after I caught him cheating, it did end in a divorce. After 8 or 9 months, he convinced me to come back and I did. I had wondered if I had done the right thing by leaving so quickly without any discussion at all. Once I saw him coming downstairs with her from her apartment, I totally lost it. I didn't want any part of it, knowing that he was with another woman. Why did he have to lie about it all, even after I caught him with her? Didn't he think I had eyes in my head? What did all of his lies do to me, even knowing that every one he told, I knew the truth. Did he think that a lie was going to make me re-think what I actually saw?