Adam looked at the face Isla was making and could no longer hold back his desire to give her what she wanted.
If she wants to be used like a cheap slave, then so be it.
As he continued to fuck the living hell out of Xu Lin by ramming her mouth into his cock, he squeezed Isla's neck, making Isla squirm. She bit her lip and let out an aroused moan.
Adam then yanked her closer, completely throwing her off balance, but with how strong Adam is, he manages to keep her body up. This only makes Isla hornier, as his sheer display of strength awakens a primal instinct in her that no man has ever evoked.
And as he takes claim of her lips, kissing her with dominating intent, her body gives in without resistance.
With her body refusing to fight back, it goes limp; the only reason she is still up is that Adam is holding her by her neck, which is applying more pressure around her neck
