your lipstick stain is a work of art » styli...
louis is simply a hipster. but, he likes girl's clothing. so.
anyway; harry is an indie style boy who is mostly seen driving around the town in his beat up truck (it's endearing), or sitting in the back of the local library, his face hidden by a book and his - classic - fedora.
when they - inevitably - meet, it is by louis slamming into a surprised, and clumsy harry.
once louis has ran off, harry notices the lipstick smear on his shirt, and finds that he can't get it to wash out... but that's okay, because he considers it to be a work of art.