Also known as ENS, this relationship status is increasing in popularity. Two individuals are involved with each other, and are not dating anyone else, however there is no commitment. It is understood that every waking moment of the day does not need to be spent together, as well each party does not need to inform the other where they are or will be at any given time. The words "girlfriend" and "boyfriend" are avoided and can be uncomfortable if brought up by a separate party.
Hey man, how long has Donnie been going out with Laura?
Well I don't know if they're "going out" as such, but they've been doing the exclusive non-serious thing for a couple months now.