Babygoose,
i heard in a shiur by a renowned darshan that the bashert is only destined for the girls.
Tosafos says the opposite.
maybe this explains the gap bet. amount of boys and girls. YES, some boys were created for being bachlors!
There are more unmarried “older” females than males, which would actually fit into the idea that the bas kol was said about the males. In truth, however, it’s possible that few really marry according to the bas kol nowadays.