Anyone know the name of this yaoi?

It was like this yaoi couple who liked each other in high school. One of them were more feminine and the other was cool and manly? But once they got older the feminine dude grew a lot more manly and he started to doubt their relationship despite not looking like a girl anymore. They talk it though and then they switch positions. And have a lot a lot of fun sex the end... SOMETHING LIKE THAT pls tell me the title if you know!! anyways thanks for the help.(๑•ㅂ•)و✧