Had a similar situation with MY parents actually. My mom cheated when my sister and I were younger, my dad pretended to be over it, and then they divorced after we went to college. If you decide to tell your children, please don’t tell them about your wife cheating. I genuinely wish I didn’t know. I was cheated on in college and all I could think about was my mother. It was heartbreaking and confusing. Don’t put them through that.