I kindly didn't understand that much the ending, like- there was more sex than context, but seeing it from my point of view, the 'uke' still feels attached to his ex-lover but in like sex matters OR realizes that the 'seme' treats him better, still exploring the 'ukes' kink and giving him pleasure and the after-care that his ex-lover didn't give him. BUT could it be that the 'uke' wants more his ex-lover since the 'uke' thinks that he doesn't deserve such kindness from the 'seme'?