One of the things she said to me on several occasions was something like this: "What are you going to do when you want to go backpacking through Europe, and Husband isn't interested?" My usual response was, "I'll go without him."
Now, I'm happy to read in this article from time.com that doing that won't harm our relationship. In fact, traveling independently from each other could even strengthen our marriage!
So, Sister, how about that trip to Luxembourg?