A quick, fun look at the meaning of "das Lob" and what it has to do with getting engaged and lobsters.
das Lob, loben, verloben, der Verlobte, die Verlobung, das Gelöbnis, das Gelübde,erlauben
The core idea of this root was
liking, loving, caring
It’s the origin of love as well as libido and belief, which literally used to be a thought you “hold deer”.