Lucy was finishing up in the kitchen while Owen was taking care of something else in the shower.
It's been really a while since he had a fit of laughter like this. And for something silly on top of that. What is really funny? He tried to recall. Lucy thought she did something terrible and he thought he did something terrible himself. Both were unnecessarily stressed by their own thoughts and assumptions. And somehow when Lucy told the whole story it felt foolish for both of them.
For Owen, it was a massive relief that made him more expressive than usual. He did feel guilty about the whole embrace thing but remembering Lucy's sheepish face was funny. She thought she had done something awful to Owen but it was actually him who had questionable intentions.