Responses
They were probably best friends and "playing boyfriendxgirlfriend"... And their relationship evolved as they both grow up. It would be more realistic if they started dating at 13, 14 or 15... But I guess the author wanted the protagonist to still be on his early 20's and not on his late 20's...
10 years old??? What?!??
They started dating when they were 10 years old?!,!?!11?!? And lasted for 10 years!?!?!!?!1?1!11
I need to lay down..