I'd agree, I think for whatever reason she's thinking Jamie isn't into her, and there is potentially too much competition from other girls. It could be her self esteem, it could be his behaviour indicates his interest,lies elsewhere, but by going for Luke m, she's picking the safe option to stay in, and maybe have a crack at winning, Like Demi did. Like Natalia considered doing when she nearly changed her mind.
I honestly don't think she fancies Luke m at all. And neither does Demi. Or Natalia. None of them do.
If you fancy the like of Callum, there is no way you're going for little bro Luke. No way,