Responses
Typo... He was thinking what am I going to tell his brother.
They don't always show the sex in every yaoi. This is like a PG version, it isn't shown, but you know if happened.
Its not yaoi if there is no H scenes between guys. What you probably mean, and what this manga should be labled as, is shounen ai.
Actually I got the impression that they did have sex, that's why he was laying there the next morning the making what am I go no to tell his brother...