people complaining about the age gap when they didn't do anything wrong or sexual are just (honestly) annoying. So far, they are friends. And it wouldn't surprise me if the author made the older guy wait for the younger guy to be an adult (20 years old) before they tried anything sexual. This seems like a very slow paced story, so that development wouldn't be weird. So, let's just not make preconceptions about things that aren't there.
people complaining about the age gap when they didn't do anything wrong or sexual are just (honestly) annoying. So far, they are friends. And it wouldn't surprise me if the author made the older guy wait for the younger guy to be an adult (20 years old) before they tried anything sexual. This seems like a very slow paced story, so that development wouldn't be weird. So, let's just not make preconceptions about things that aren't there.