She was worried that she is only using Han Chen as an excuse to fill the missing piece so she can completely forget about Chen Kai, the fact that Chen Kai wasn't with her when she met Han Chen made her unable to confirm if he is really just a substitute for her.
Even when she kissed him, the feeling still lingers on her lips but why does it feel like she did it just to find solace and lie to herself that she can move on from Chen Kai, at this moment, she wonders what really hurt her, is it her pride....everyone compliments her beauty and most men can't take their eyes off her so she must have expected Chen Kai to be incapable of leaving her or is it the feeling of betrayal after giving hundred per cent of her trust to him...oh wait...it was never hundred per cent.
{Chen Kai....I always knew that side of him exists, his dreams and ambitions...I knew it from the moment he hid me behind him instead of introducing me to his mother back in uni...}