This illustration is inspired by a theory presented in the tv show "How i met your mother", and it tells that an indicator of a perfect pairing between two people (romantic wise) is that one of them adores olives while the other despises them, making the latter gift all the olives in a dish to the former. In any case you can search up "The olive theory" (It actually blew up on tiktok a while ago) and some form of explanation similar to this one will come up.