@Males1970,
Yes, what you did is cheating, and wrong. You didn't end your marriage, you sought out somebody else for your own comfort. You allowed your hurt and confusion to enable your thoughts to shift from your marriage into someone else. That IS the classic definition of cheating.
So, I have to ask, why did you do that? If your husband told you he didn't want you, to be married to you or love you, why did you continue the marriage?
His actions are beside the point, what he did is his to atone for. You can accept or deny his reason or behavior but it doesn't excuse you from your poor action.
All because he cheated doesn't mean you cheat as well. Now all the optics have fallen on you and your behavior. So, stand up, make the decision to own what you did and move on. Whether that's with or without your husband is the choice now.