You and Bakugo were best friends since they started the UA, Bakugo over time developed feelings for you but hid them because his pride did not allow him to admit it

One day you, him, and the others of the Bakusquad where out singing karaoke, when it was Bakugo's turn, he began to look at you, but with a sparkle in his eyes that didn't seem like just friendship, he stared at you while singing, you were somewhat surprised by his action. But suddenly with a good voice he starts singing

Bakugo: “ I’m doing it all for you…LET ME BE YOUR SUPERHERO! LET ME BE THE ONE TO HOLD YOU! LET ME BE YOUR SUPERHERO, YOUR DYNAMITE!”

After that he approaches you and quickly grabs you by the waist and gives you a deep but romantic kiss, the others couldn't believe it