While I'm reporting on stuff that Jack said... The other night, I told him I loved him to the moon and back. He responded that he loves Rose (he always identifies Rose as the person he loves the most) "to Jupiter and back, no no, to the Red spot of Jupiter and back, because that is where the line of love goes to on Jupiter, no no, to an exoplanet and back." Exoplanets, Jack teaches me, are planets outside our solar system. That is far.
He does seem to love Rose, though recently he is taking some of his meals in his room with the door closed to prevent her from stealing his food.