The threat was always there with Blake, granted, he didn't tend to think of Sen as a meal. Having a tendency to kill his meals, he didn't bite Sen as a regular part of things. That and the boy had such an issue with dirty. Blake threw out his sheets on a regular basis, the stains being impossible to get out with anything even remotely normal. So much easier just to replace them.
He took his time learning how to make his lovers happy. Pulling them along with him to the brink and then taking exactly what he wanted before leaving them essentially high and dry to fend for themselves. Sen wanted him to increase the pressure. He could feel it from the boy's motions. Too busy to notice the change in hair color, Blake pressed his teeth against Sen's skin, drawing blood at his chest to go with the slight smears he was leaving on his torso. Then there was slow motion to lick the blood off.
A contented cat's purr from between his lips, the unneeded breath moving across Sen's chest. Then he rubbed his hand from the wounds in Sen's stomach to his hard cock, knuckles against his heated skin.