"Love is a complex emotion, and in marriage, feeling appreciated is one frequently overlooked aspect that is extremely important." Those are the wise words of a commenter on a Reddit thread that discusses a new UGA study that links gratitude to positive marital outcomes. It sounds simple enough, right? Kindness and appreciation are crucial aspects of a relationship, but long-term couples know that slip-ups happen and that you sometimes have to step back and remember to say thank you. You know each other so well that you often know what the other is thinking, but it's nice to hear your partner's gratefulness out loud. These are eight simple ways to show gratitude to your spouse, as told by real-life couples.