With a groan and a curse, Jim does his best to comply, hips snapping hard and fast now, chasing his own pleasure even as Jim seeks to prolong Bones' own. "Almost there," he chokes, beginning to feel a telltale pressure at the base of his spine. The hand he has around Bones' cock loosens, begins to stroke, steady despite the erratic stream from Jim's mouth, "Fuck, feel so good, can't believe I finally get to, been wanting you forever, Bones, god." With a startled gasp, Jim begins to come, stripping Bones cock with his hand to take him with him.