This week, psychology experts and wife-and-husband duo Suzann Pileggi Pawelski and James Pawelski discuss their new book, Happy Together: Using the Science of Positive Psychology to Build Love That Lasts. The Pawelskis have clued into the fact that how we behave with money can make a big difference in the success or failure of our relationships. Whether you're single, dating, married, divorced or widowed, their wise words can help lead you in the right direction. In Mailbag, HSAs, credit card debt, and how to sell your home.

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