bound morpheme

Ing.
Ing when attached to a word connotes something ongoing, in process.
You could go skating or be reading. Present progressive is pretty simple in it's construction.
But in my experience (limited at best) the verb "to date" is very difficult to attach an "ing" to. One date does not warrant an ing. Two dots make a line, but 2 dates not necessarily indicate an "ing." What are the rules?
In my scatterbrained mind the song "single ladies" popped in. And suddenly the lyrics were transformed from "put a ring on it" to "if you like it then you shoulda put an ing on it." Oh how the mind reels.