Easy went out the window the moment Astarion got his mouth on him. Fenris tenses beneath the other man's touch as a hand pushes his thigh up, and it takes him a moment to realize what he's doing. By then, his leg is over Astarion's shoulder, exposing more of him to the man between his thighs.

Fenris shifts his weight, trying to accommodate the new position as his muscles relax into the new demand - he's not been as active as he usually is but it's gratifying to realize he's not completely stiff. He barely registers the fingers brushing over the base of his cock, but he certainly notices when one presses against him, seeking access. His eyes flash open and his thigh tenses against Astarion's shoulder as his body yields. It's as unexpected as it is--pleasant? Alien? Fenris hisses another sharp curse as he pinned between Astarion's mouth and his hand and the next time his hips give a restless shift, he gasps in a sharper breath.

"Astarion--kaffas--" It sounds more like a curse than a plea to stop. Though he does follow up by kicking the other man's hip or side or whatever he can actually make contact with using the leg that isn't thrown over Astarion's shoulder.

"What are you doing?" Despite his best efforts, it comes out sounding like a groan as much as a growl, the answer a foregone conclusion but demanded all the same.