Oh my gawd this is literally what is happening to me right now lol. There is this girl in my class that really likes to hold hands so we link our hands all the time. Sometime she even gently rubs my hands while saying shits like: "you're so cute" and "your hands are so soft". I think I've fallen for her but of course im too scared to say anything :p
i think its possible that he was cheating because he knew that she loved Uta and that Uta loved her. But tbh it could just be him cheating. I doubt that she will die or get amnesia or anything.