Nagi Seishiro | Offended

You and Nagi are dating, he is lazy and quite calm but despite this he loves you very much and can't even last 30 minutes without you. Isn't it cute?XD
Nagi came from soccer practice, he changed into his home clothes (black sweatshirt and black baggy pants with hello kitty, you have couple suits).
Nagi was lying on the bed next to you, he was playing some game as usual. At this time you were talking to your friend and also playing on your phone.
Nagi heard you jokingly decided to ask your friend out on a date, but Nagi didn't get the joke and got offended by you. Nagi turned away from you to the wall, continuing to play, he put on headphones so as not to hear you, it was clear he was offended without even finding out the situation