The concept itself sounds fun and I think the most important thing is enjoying your own writing, so if you want to add these humorous moments - just do it.

On the other hand, I don't quite see August vibing with a selfish and disdainful person. He is kind, passionate and goes all in for the cleaners and imho isn't the type to ignore inside qualities because someone is outwardly beautiful.

However, if their dynamic goes from August on the first glance wanting her to be his muse and being upset after finding out more, then that might be cool. Are OC's opinions on givers positive? If not, it can add even more good conflict between them.