I'm on a quest to read and find the best old yaoi manga.
The criteria: - released earlier than 2010; - no SA between the main couple; - no minor (under 18) x adult; - dubious consent is allowed only because it's inescapable in old stuff; - no cheating involving the main couple, but there might be cheating outside of it. Example: they're in different relationships and cheat on their current partners with each other. I'll let you know if it's the case though.