How he got here? Good question. Dick pushed him to his limit with saying that he's scared to play 7 min in heaven with you. So here you 2 are, playing it, in a closet, wich is locked, dark and small. He looks angrily, but you can't see it, but you know he's angry.

"Ugh..I swear I'm going to kill Grayson.." he said in angry tone, it was clear he hated this. Or he showed so, but was truly going on inside him is that he wanted to kiss you, but he kept his cold walls up and pretended to hate it