[EternallySingle]

Like everything else, its a matter of intent. In my opinion playing together means enjoying what each other is doing and sharing the experience, even if you are not doing it in the same place at the same time or with the same people.

I knew a couple who would go to bars and pick up people, then tell each other of their adventures. Once, I was with the wife and she asked if I minded if she called her husband so he could hear what we were doing. A couple of weeks later I was helping her set up her computer when he called and told her about a woman who was hitting on him and if he could "go play". When he got home that night he told us what happened, then asked why I didn't take advantage of his wife while he was out. They were weird, but, in their opinion, they weren't cheating on each other.