Dear Annie: I’m a divorced woman in my late 40s with a child in college, and for the past 2 1/2 years, I’ve been in a wonderful, loving relationship with a man I’ll call “Matt.” He and his sister, ...

DEAR MISS MANNERS: I have a twin sister who lives in the same town that I do. We look reasonably similar, especially to those who don’t know us well. We share some social circles, but of course we ...