yaoi title

Hi! I'm looking for a yaoi... Two guys and neighbours. One of them love the other and lives only with his mother and have a flirt with the gay friend of the mother. The two friend begin to date but they haven't physical relationship. The mother died and the son have to transfer to his grandmother in another city. He became a erotic writer and have sex with others. His boyfriend after years decides to go live with him. From now on they live together( also with other persons) and have sex for the first time . What's the title? Thank you!