Oh, gosh. I'm so sad this happened to you. It doesn't sound, to me, like your husband "gets" what marriage is all about. It's not "going steady" where the occasional flirtation can be expected. I doubt you want a marriage that is so fraught with distrust, would you? Some men just never grow up, some men feel they've lost their attractiveness to the opposite sex once they marry (and feel they have to prove it, somehow), and some men need constant ego gratification any way they can get it.

I agree with Dianne: once more and you're outta there. For your own sake. Please.