Half the sum of attraction, on either side, might have been enough, for he had nothing to do, and she had hardly any body to love." (of Anne Elliot and Captain Wentworth, Persuasion)
I'll bet you anything you like that half an hour after they have met, they will be calling each other sister. Women only do that when they have called each other a lot of other things first.
Anyone who is not an anarchist agrees with having a policeman at the corner of the street; but the danger at present is that of finding the policeman half-way down the chimney or even under the bed.