Iris was lightheaded and a little bit annoyed because Cane neglected her and talked with someone else. Not to mention he kept nibbling on her earlobe, which was so ticklish.
The alcohol that Cane kept pouring for her, seemingly was starting to show an effect on Iris. She became a little bit bold when she cupped his face and bit him back. She bit his lips, which made Cane stiffen.
On the other hand, the Beta, who was sitting at a different table from them, had his jaw dropped when he witnessed this.
Cane hated it when he had to kiss someone or he was being kissed, because Gerald had done something unthinkable to him, ruining this particular intimate act for him.
Jace also still remembered how Aria kept complaining because Cane didn't want to kiss her on the lips. She tried to instigate it many times, but Cane would get mad at her and refuse to see her until she swore she wouldn't do that again.