Astarion lets out a low chuckle, just the softest sound, and doesn't stop. On the contrary, he dips lower, dragging his tongue flat from Jacob's sac up to his hole, lapping at the tight ring of muscle there.

It's not something he does for many of his partners - he rarely tops and they rarely ask - but he appreciates the trust it involves. He enjoys it for that, with him. The raw intimacy of it.