If you filed early this year, you could be getting a check from Uncle Sam soon. But before you cash that baby and head straight for the mall, consider investing it in your relationship. We're predicting the payoff will be big.

1. A Bigger Bed

Do all your spooning in a queen or a full? Think about upgrading to a king-size bed. You'll be less likely to wake each other up with tossing, turning, kicking and middle-of-the-night bathroom runs. And you'll be surprised at what a little extra shut-eye can do for your relationship. We'll give you a hint: More sleep=better moods=fewer fights=more sex=happier relationship. Plus, that new mattress will give you more space to try some new...moves. Get help finding the right mattress for you.

Photo: David A Land / The Nest