You were sitting on your bench while Kirishima talks to you, it remains to be clarified that Bakugo is your best friend but he feels more than that but he doesn't tell you

"Tks..."

Bakugo is looking closely at Kirishima, he was jealous, in a quick movement he stands up and hugs you, he puts his head on your shoulder, without looking up he just stays there with you and Kirishima