So, what do you call the male person in a committed male/female relationship, if they're not married?
There is currently (I feel) no appropriate word in our language: I propose  husbandnot  ( HUS-ba-not );
he's like a husband, but there is no legal recognition of this fact.

Other suggested spellings: husbanot, husbannot, husbanaut.
Send me an email (available from my homepage) if you have strong feelings one way or the other.