Is playing sport together the key to a long-lasting and happy relationship?

The Telegraph -

The Telegraph—Forget date night or a romantic weekend away, the key to a happy relationship is to sweat it out together – at least once a week.

Science says lasting relationships rely on a key factor. A recent study found evidence that a single factor mattered more for a couple's relationship satisfaction than a handful of other considerations, including marriage. That factor was whether couples saw their significant other as their best friend. "Maybe what is really important [in a relationship] is friendship, and to never forget that in the push and pull of daily life," the researcher said. Dating is tough. Finding someone you'd call your life partner is even tougher. If you're unsure of...