My Dad’s affair turned my whole world upside down

DEAR DEIDRE: My world turned on its head when I found out that my gentle, loving father has been having a passionate sexual affair for almost 20 years. All this time I thought my parents were happily married.

I’m a man of 38 and I can’t get my head around this news. I’m married and have two young kids.

Mum is 65 and had to have a knee replacement recently. Dad asked if I could go and help her because he was going away for the weekend.

When I got there, Dad, 63, had...