Barry watches it take Derek apart, a tremor that starts at the heart of him and spirals out, flaring his eyes wide and red, his hoarse cry ringing in Barry's ears as he paints a stripe up his chest.

It's everything Barry wanted, and he takes Derek at his word, doesn't stop moving even as he leans down and licks a drop of come from Derek's throat. It tastes like him, and Barry groans, feels the start of his own orgasm curling hot at the base of his spine. "Will you tell me you love me?" he asks breathlessly, head dipped to nose at Derek's throat. "Hold onto me, please."