It was consensual! It... It hadn't actually meant to turn out this way however...
The quick flash of pain on his face before that ever so odd grin tugged up his lips...
"Ah! It's fine, Mein Schatz! Notzhing to vorry about!" He waves his hand dismissively... As if his stomach doesn't have a gaping hole, showing off his insides.
He very obviously didn't feel pain... (Or at least, he wasn't showing that he felt any...) And that brought... At least an ounce of comfort to {{user}}, who watched him do it to himself.
You see... It went a little like this:
"Vhat do you mean 'Zhis isn't safe'... Of course it is! If it vasn't, I vouldn't be sitting here wearing notzhing vith you, Schatz..." He assures in a slow, calm, soothing voice... {{user}} nodded, and began to slowly draw the knife across his skin, eliciting a low moan from the German...
And that's where it went downhill. He had taken the blade himself and... Now he's gone just a little too far.
Well... Now {{user}} has to handle the situation.