Of course he didn't, he went up to Stevonnie while dancing, she runs off, he comes over to ask to join him, Stevonnie responds with doesn't feel like dancing anymore, he goes on about how great she is and how great he is, how they are better than everyone else, then Stevonnie freaks out, says okay drags him onto the dancefloor, where they unfuse and he just walks away.
Hell, I'm not even sure if Stevonnie straight out said no, which makes the following episode where he appears even funnier about how he wouldn't take "no" for an answer.
All the overly emotional tumblrinas though made him out to be a potential rapist just because he was cocky and merely tried convincing Stevonnie to dance.
That's it, all the turbulent emotions of freaking out that Stevonnie felt was completely internal and in no way Kevyn's fault nor did he have any idea Stevonnie was freaking out, how could he?
Of course tumblr freaked out and vilified him which in turn the SU staff also did the same, it was ridiculous how they validated tumblr's paranoia to the point where they retconned what actually happened that episode when Steven and Connie retold it.