Niksik, so I guess 'chaste' could mean someone who has been chaste outside the bounds of marriage, not necessarily one who is still a virgin, right?
The Prophet, after all, married both Jewish and Christian wives, and at least in the case of the Jewish wife she was a widow. Though from what I remember there is some debate of whether Mariam the Copt did convert to Islam or remain Christian, and whether or not she was truly a wife and not a concubine.
But here I'm straying from our topic...