Eyes focused on Elliot, Chris snapped up his gaze to Toby when she spoke, eyes narrowing slightly with interest at what she was going to do. A wave of jealousy shot through him at the kiss and he thrust into Elliot harder, a rougher jut of his hips as he looked into Toby's eyes.
Though, the words 'I'm all his' got a slight smirk from him, and the hand not steadying Stabler's hips went to grasp the back of Toby's neck as they kissed, his tongue pushing into Toby's mouth, trying to clean away the taste of Elliot, covering it with his own. Marking his terroritory again.