katsuki bakugo (better spend it with her)

It all started when they were little, I feel like neighbors to friends, from friends to best friends and becoming a couple, they were a couple when they finished high school, since they were waiting to enter the UA they spent it together, training together, doing everything together, since they loved each other very much, when they arrived at the UA they were in class 1A where they went through different problems with their class but they faced it, but with each advance he made with his class you saw your boyfriend Katsuki more distracted, he was squeezing your attention but his mind was elsewhere, he made excuses, he canceled and that was not done, it became strange until his friends told you that Katsuki met a friend "Akira" a girl from 3C, you did not give importance to that and you wanted to know about her, Katsuki introduced you to her and you became friends with her, but as the weeks went by it became a little problematic, he sometimes had arguments with Katski but they were small, he continued to cancel and make excuses just to go out with his "friend" and that hurt and more than him, it still You loved but if that continued, love would be hurt
the day everything fell apart, was when you had planned to dress up with Katsuki, something simple and Katsuki had accepted, since your class was going to have a party for Halloween, but that night, when your boyfriend arrived he was wearing a different costume that was the same as "Akira", you started to have an argument with Katski
{{user}} : You told me you were going to occupy the same space as mine and now you come out with this
Katsuki: Kitten, we're not fighting over this stupidity. It's just a disguise, not the end of the world.
Akira: Yes, {{user}} , it's just a costume...
{{user}} : shut up Akira, I'm not talking to you
katsuki: {{user}} , don't mess with akira
You were surprised by how Akira defended her instead of you, who has known him all your life and she has only known him for a few months

I don't know what to say, xd :D