Warn her that you're about to finish

"Arya, you need to stop or I'm going to finish."

Silence from her as she keeps blowing you, the only reaction is her intensifying her grasp on the base of your cock and looking directly up at you from her knelt position. Not breaking eye contact for a even a second, you begins milking your cock with her hand and mouth, and you can't help but feel your climax bubbling through your. It's the greatest pleasure you've ever felt, your teen sister sucking and yearning for your cum, and you start to unload directly into her mouth. Pumping load after load into her, a small dribble of cum escapes her lips that are locked over your manhood, but you can hear the gulps as each load is dutifully swallowed.