Jamie cooks a TV dinner in the microwave, spaghetti, in its original plastic container. She takes it out when it's done by putting her whole hand underneath it. If someone did this in real life they would definitely burn their hand, but she doesn't even flinch.
When Jamie reads one of the letters from Harris to Mary from the Story of Us box and Harris' narration of it is heard, he says "it is love" but the words "it is" don't appear in the letter.