Gratitude and laughter are keys to a long term healthy relationship. Furthermore, the lack of these characteristics is as toxic to your long term health as chain smoking while drinking your morning coffee. Gratitude can fuel your relationship for days, weeks, and years, but needs not be extravagant. A simple “Thank You”, complimenting a well-prepared meal, or congratulating on a job well done. Laughter can have the same
Laughter can have the same effect, but proves to be more difficult in situations where the partners do not share the same sense of humor. You certainly do not need to be a comedian to achieve laughter, but simply enjoying the company of your partner in the course of time, surely you will experience some humorous situations.
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https://www.sciencedaily.com/releases/2016/02/160222144546.htm