I’m married but I’m scared I won’t be able to resist first love at school reunion – how do I stop making a huge mistake?

DEAR DEIDRE: DESPITE being happily married, a message from my first love has left me feeling like a teenager with a crush. I’m 42, and my husband is 44. We’ve been together for 17 years and have three children. My husband is a good man and I’ve never had any reason to doubt our marriage....