What if one set, G-d forbid, gets into a nasty divorce? That would leave a sticky family situation with another set remaining married.
So what?
In most situations, it’s usually a case where one brother marries one sister and then, later on, the other pair meet and decide to marry.
So, if you’re in the first pair to get married, such a thought never enters your mind. And if you’re in the second pair, are you going to not get married because you or the other pair might get divorced?
The Wolf