Dear Prudence,
I am married, and my sister is dating a guy named “Dan.” We are all in our mid-20s. Dan is a buzzkill. He is boring: He hates sports, bars, restaurants (but he doesn’t cook), and movies, and he thinks pets are “unsanitary.” He never offers a suggestion for an outing and just sits like a bump on a log if we do anything as a group. Conversations with him are minimal. My sister is fun—she cosplays at conventions, is always willing to try something new, and she wants to get a dog once she can find a place with a yard. My sister wants my approval, but I don’t know what to say. Dan isn’t a bad guy—just beige. I don’t see my lovely, lively sister being happy with him. Should I say anything to her? If so, what? I have tried the “If he makes you happy” standby, but my sister knows that is a dodge.
—Buzzkill