It's Rosie's self absorption, attention seeking and dramatics.
She knew full well about Adam and Kendall, and she discussed it with him, then snogged him in full view of Kendal five mins after he dumped her. That's too mean girl for my liking. Fine, be with him, but have some sensitivity,
The way she's behaving is grim, you'd have thought her 40 year marriage just ended with the way she went on, then crying at thr make up challenge, slating Zara, then hugging her and warning her off him, then immediately trying to get Adams attention back on her with that ridiculous photo shoot.
There is no doubt Adam has behaved terribly and there has been plenty of discussion on it, but Rosie has been ridiculous in there too.