Written to: I Won't Give Up - Jason Mraz, crosspost from AO3
Cordiform: Heart-shaped.
"Loki, love, did you know this?" Thor asks, flipping through the pages of a book. This surprises Loki to no end, as he enters the bedroom from his bath, his hair dripping over his shoulders and a towel wrapped around his waist. He hasn't seen Thor pick up a volume in centuries, and from the looks of it, this one doesn't even have coloured pictures. Quite a vast improvement over the last one Thor read, which, as Loki recalled, involved a giant strawberry and a mouse.
"Know what?" Loki asks, turning his back to Thor and rooting through their armoire for a clean nightshirt to wear. Thor admires the view as Loki allows the towel to slip to the floor.
"There are some Midgardian theories that a heart shape originated from the appearance of a female bending over and presenting her bottom."
Loki shoots Thor a glance over his shoulder, rolls his eyes, wonders what exactly Thor can possibly be reading.
Thor clears his throat.
"This is the part where you bend over and present your bottom to me," he clarifies, and even from here, Loki can feel the heat of Thor's gaze on the small of his back.
Loki sighs, and because Thor has that absentminded smile on his face, the one he gets whenever he is thinking about something that he should most definitely not be thinking about, obliges.
Thor looks from Loki back to the book, back to Loki again, and thinks that perhaps Midgardians are more clever than he had given them credit for.