Dear Abby: Son learning ways of wayward dad?

DEAR ABBY:

I have been married 18 years. In that time my husband has been unfaithful twice. Last week I was going through his cellphone and noticed from his emails that he had registered on a dating service and was exchanging photos with four women. I threw him out of the house.

What really upsets me is my 17-year-old son knew about the affairs and thinks it's perfectly normal for his dad to have female "friends" while we were still living together. I don't like what my soon-to-be-ex did to me, and I don't want my son thinking it's OK to start looking while you're still married. My son finds ways to excuse his father's behavior. How can I make him understand that looking for other partners while you're married is being unfaithful?

- Texas Wife Who's Had It

DEAR HAD IT: Your husband, by making your son his co-conspirator ("It'll just be between us guys"), has made him a member of the "boys club" and cliqued you out. Has your son not seen how painful this has been for you? Your almost ex-husband is a terrible role model. When your son follows in Dad's footsteps - and there is reason to believe he will - he'll never have a successful marriage of his own.