Interactive on LetMeJizz
What sets these apart is the stuff on screen you actually press, buttons that branch the scene, a slider that picks the angle, prompts asking what happens next. You stop being a viewer and start steering it, choosing the position or who finishes where. The fucking is normal POV stuff underneath, but the control is the hook that keeps people clicking through every path.
95 interactive videos here, all HD and all free. New ones go up daily, so check back if you don't find your scene first time around.