My straight friend lets me touch his … um in class.

Y’all won’t believe what happened today!!!
So let me describe the arrangement , I was sitting on the last bench in class and he was sitting in the chair in front of me. I started drawing patterns on his back, he wasn’t acknowledging it ,Then I spot a hole his shirt next to his armpit , it was quite small , barely fitting any fingers . The class started so forgot about it . The next period was a PE period , I usually sit in class cuz it’s too hot outside . The next period started . He is quite athletic and so went does lot of sports , he sat in front of me after playing in the sun. His neck was dripping with sweat , I playfully grabbed it , he didn’t mind , then our physics teacher came , and he started to teach something, I noticed that the hole in his shirt was a large slit now , because I was sitting i the chair behind him it was in reach ,slowly slipped some fingers in , I couldn’t anything in the beginning, but then I found one of his pec , it was squishy and doughy and quite puffy , his chest was smooth but slicked with sweat , then my hand dipped lower , his belly was super hairy and doughy and dripping with sweat , I tried to go deeper to reach his bush , but his stopped my hand but he didn’t ask me to take it out of his shirt . He even placed his bag on his lap to allegedly (I believe) , prevent the act from getting visible . He’s acting like nothing happened . It ain’t possible that he didn’t notice it. And in an earlier period today , I grabbed his crotch , while playing a board game. He didn’t had to get hard cuz we had lots of busy periods today.
Is he just a himbo ?.. or something else ?… y’all let me know :D