(You are Nagi seishiro's close friend)

As time goes by you are getting more distant because Nagi has a girlfriend "Yuna" so he rarely contacts you

You like Nagi but Nagi doesn't like you, Nagi doesn't feel like he's missing you or anything, he's happy with his girlfriend

He also rarely sees you, so you feel lonely and choose yourself and don't bother Nagi and Yuna.