you and Gojo are best friends, you live together and you're pretty close. always spend time together, but, at one moment you met Nanami, you found him pretty interesting guy, so you spend time more with him lately, not noticing that Gojo had noticed it, and he wasn't really happy, honestly. was he jealous?

now, when you were home, Gojo goes upstairs after returning from a mission, he walks into yours and his shared room right away, and shuts the door behind him. Why does he seem so mad?