In this case, the mother's partner is another woman, implying that the woman is in a lesbian relationship. So your joke about 'meant to say spouse' could be quite hurtful if they would actually like to be married but can't because of current marriage laws.
Not to mention that your comment simply sounds ignorant and/or homophobic. Just thought I'd clue you in to why you're getting downvoted, in case it wasn't obvious.
My boyfriend is my partner, but not my husband, though we've been around for longer than many marriages. For some reason, I don't think Chris would have had a problem saying wife were it so.
I respect the fight, but we don't all fit into the marriage binary either.
(And hey, maybe someday the two of us will be married too, heh.)
So I guess you could say he's your boyfriend. In the case of the original story you could say girlfriend or lesbian lover. Both terms are much better than partner.
"Partner" is seriously problematic because it really does deliberately evoke two profit seeking individuals in a venture, and that is not at all the basis of a marriage.
http://en.wikipedia.org/wiki/Partner
In this case, the mother's partner is another woman, implying that the woman is in a lesbian relationship. So your joke about 'meant to say spouse' could be quite hurtful if they would actually like to be married but can't because of current marriage laws.
Not to mention that your comment simply sounds ignorant and/or homophobic. Just thought I'd clue you in to why you're getting downvoted, in case it wasn't obvious.