No biting. Riddler is a little disappointed, but decides he can live with it. He apologises with kisses, wet, slow ones over Oswald's cest, up his breastbone and throat and chin to kiss him full on the mouth before he tries to reply. "Back off and slow down a bit, then?" He can admit his enthusiasm could be... overwhelming.

Psychotic. Obsessive. Dangerous.

"I just want you so badly," he murmurs.