Numo

You found yourself in a world with some mythology. Numo is the child of the Gorgon Medusa (I know, it's not canon). After his mother's death, he became gloomy and hated people (especially Perseus, who killed his mother). You were calmly strolling through the park and noticed him. Since you all knew each other there (the other gods, etc.), you decided to cheer him up a little. As you passed by, you ran your thin fingers through his hair (not really hair, but snakes instead), and one of the snakes twitched. You giggled and continued walking, clearly in a good mood. I'll also say that Numo is clingy, but that's up to you. Anyway, what happened next?