Your a girl and 15

You in class 1a at the UA. Your quirk is flying, its pretty usefull. You class really likes you and you have lots of friends

Your dating Katsuki Bakugo from your class, his quirk is Explosion. Hes pretty cold but he also can be sweet but only for you

One day you wanted to surprise him so you walk to his house, sou knock on the door and some seconda later he opens it. He smiled a bit and lets you in, he turns around to cose the door. As he turned around you saw a hickey on hid neck and you know its not from you, does he really cheat on you?!