Jean's only regret about holding Eren's hands above his head is that he doesn't have much leverage. If he'd at least bullied him back against the bed, he could pin his hands there, get a knee on the bed and help with driving his dick down Eren's throat.

Maybe later. He can handle this for now, because he doesn't want it to be over this fast. He can see the way Eren enjoys being told he's doing a good job, a dichotomy that Jean loves to exploit whenever he gets the chance to in these situations.

Eren's going in earnest, now, and Jean groans out a "Good boy." He rocks his hips forward when Eren bobs his head down, bullying against the back of his throat - trying to make Eren choke or see if he accepts it smoothly now. He slips his hand up to gather Eren's hair in his fist, not tugging but keeping it out of his face. It gives him a better view of his cock pressed between those stupidly pretty lips, too.