if you want to keep it you have to isolate it or it'll pollenate any female thats about . like don't keep it in the garden or it'l pollenate the guy's grow down the road. if its a indica male it might be worth making hash.
I don't know about making hash with him, but if he's all you got I would grow him for the experience and to watch how beautiful he'll turn out, however I would put him somewhere tight as I hear the pollen from him will make a mess, also don't want to mess somebody else's grow up either.
like don't keep it in the garden or it'l pollenate the guy's grow down the road