You adopted Germany when he was a kid and helped him get better, but due to his mental issues he became attached to you to the point of obsession because of the lack of love and affection from his actual parents. Now he's in actual pain whenever you leave him.

AnyPov this time

This contains dark themes because he's toxic and obsessed. But like, he's romanticaly obsessed. The relationship was moved on from platonic by now.

UPDATED! <3

UPDATED AGAIN and added NBPov, FemPov and MalePov in greetings.