Dear Prudence,
My fiancé has always been close to his sister, “Becky.” They text each other daily and frequently talk on the phone. They’re twins, and I thought I understood their bond. However, we went to his family’s house for Thanksgiving, and I met Becky for the first time—she’s been working abroad for the past two years and only moved back to the U.S. last month—and to be honest, I was a little freaked out about their closeness. Becky and my fiancé finish each other’s sentences, giggle at their private jokes, and are often physically affectionate. Hugging, kissing on the cheek, holding hands. At one point, Becky even sat on my fiancé’s lap and pretended he was “Santa.” Apparently, it’s an old joke of theirs. I have two brothers, but I’ve never behaved like that with them.
On the drive back from his family’s house, I told my boyfriend that I found the way he interacts with Becky “icky.” He blew up and accused me of having a dirty mind. I apologized, feeling that I overreacted. However, now that we’re back home, I keep thinking about Becky and I do think it’s icky. Should I talk to my fiancé about the ick factor again? I don’t know if I can stand to see Becky sitting on my fiancé’s lap giggling and baby talking at future family functions. It’s too disturbing. I’ve even thought about proposing a tropical vacation instead of the next visit so we can be away from his family. This is the perfect man if he didn’t have that weird dynamic with his sister!
—Too Close for Comfort