Does anyone know the name of this yaoi?

so for the most part i have not read this in a really long time so, my memory is very vague. from what i know the story is about two boys and one is really into this manga or anime. because one is infatuated by him he tries to understand the manga/ anime. i remember the end and they went a manga/anime convention. i think they have in the bathroom and make up or something.