Imagine if someone touched your lips sensually; how would you feel? Especially if you are an energetic young man and like to flirt around like Nick.
Nick wasn't a boy who would sit still when a cute girl approached him, but he was willing to hold back so Lydia wouldn't be bothered. He actually felt quite guilty for secretly eavesdropping Lydia's conversation with doctor Bennet and watching the girl's interactions with her grandmother like a stalker.
That's why today he decided to be a good boy and not interfere with the girl's work. It was hard not to flirt around as flirting was his daily meal, but he did a great job by restraining himself. And yet, Lydia instead played with fire by poking his lower lips like that.
Well, it was an ordinary touch, but for Nick, it wasn't.
