It's a slow build of pleasure low in Steve's body, burning hot and hotter until he has to give in, moving his hips a little faster, panting rough against Danny's mouth but unwilling to pull back from him for longer than a second. He gets a hand between them, palm still slick to work around Danny's length, timing his strokes with the thrusts of his hips, his groans falling freely from his lips. "Oh, God, Danny, love you."