Maybe I’m overthinking this, but the whole point of fandom is to overthink things. So, imma go for it.
There is a very strong link between anxiety and warmth. One of the symptoms of really bad anxiety is your hands get really, really cold. Like cup-your-best-friend’s-face-and-watch-her-shriek cold. Because the body feels like it’s under attack, thus the blood rushes away from the fingers.
Holding a warm cup of hot chocolate or tea is a really great way to reassure the body that nothing is wrong. It sends a feeling of well-being, of safety.
Now, the fact that Jack sees itty-bitty Bitty as a source of /warmth/……
*whistles off into the sunset*
what i do is not up to you 