My dementia-stricken husband said he cheated on me and has a secret child… should I believe him?

DEAR DEIDRE: MY husband has dementia and recently said he cheated early on in our marriage and has a son from that relationship. I’m so confused. I have no idea whether it’s true or not. We’re both in our sixties and have been happily married for nearly 40 years. We have two daughters, who have...