Dear Abby: After 4 years of marriage and 3 kids, my wife wants an open relationship

DEAR ABBY: My wife and I have been married for four years. When we got married, we were both monogamous. We wanted kids and a classic nuclear family, and our interests and political beliefs were similar. We had three kids in 15 months and received no help from anyone.

I wasn’t the perfect husband. I sought out other women via online dating sites, though I never cheated. Toward the end of our fourth year of marriage, my wife slept with another man who has been a friend of hers since she was younger.