JJ is so obnoxious on valentine's day with announcing all his gifts and shit because he's a little bitch, but, of course, he's also a sweet cinnamon roll.

in my head, he planned out this big elaborate proposal when they visited germany.

they went to the neuschwanstein castle, and at sunset JJ proposed to her in the main hall when nobody was around, with the light pouring over them creating brilliant rainbows through the glass, and said, "Will you be my queen forever, ma chérie?"