My Oldest Son is autistic (you might already know that). By far my favorite symptom of his sensory processing disorder is his observation that seeing very endearing and adorable images makes his teeth go warm and soft.
Today he saw a lot of baby pandas in a magazine. Last time it was puppies in a calendar.
Some of us feel warm inside when we see such things. I think I have heard it described as heart melting or something similar. It is so cute that he has it in his teeth!