I'm not sure what to say. No, I do not think you ought to call your husband and tell him what you did last night. That isn't going to help the situation. I'm not sure where you stand on your situation. Are you trying to move on with someone else? Or do you hope to reconcile with your husband? I guess my advice is that rushing a new situation or R with a new man is really not the way to deal with your hurt feelings over what your H is doing. Not to mention, if your H comes back, will you then be hurting someone new by leaving them to reconcile your marriage? Just some things to think about. I'd slow down a bit and focus on you for a while.
Most of us really marry only once. First love endures, even unto our dying day. And we never really divorce.