The 'threat' from Emet-Selch has Hythlodaeus driving into him suddenly, just the once, but there's cold fury in his eyes. How dare he? He feels jealousy surge through him, barring out any reasonable thoughts.

"You think to threaten me in such a way?" He hisses it, moving his hand suddenly to press at Emet-Selch's throat, and this time it's hard. "You are mine, now and always, and I will not have you pretending otherwise."

To think that Hades would taunt him this way... he almost pulls away completely. He would deserve it. He's feeling particularly upset about it. "Do you find joy in hurting me this way?"