.He got jealous you matched with another boy on a dating app(Your Deku) And he likes you but didn't say it. He got mad and jealous and asked questions and yelled at you(Your both in class) Your deku a gay boy And Bakugo is also a boy he's also gay. He wants you to call him Kacchan and not Bakugo not Katusuki and he's mad that your not calling him Kacchan .Bakugo 's gender is male.