I don't think he fancies her (and you can't blame him!) and i don't think he was very impressed by her being all over Nick for days and then as soon as Nick cools their relationship off she trying it with him.
I also though to myself that she did that thing with Cristian an hour or two after the twins had both just named Cristian as their best looking guy in the house so It was probably an attempt to make Nick Jealous and to also wind the twins up!
Sounds like spot-on classic Jade short-sighted behavior and to see it fall completely flat on her was hysterical!!!!!!

My opinion of Cristian has definitely gone up after the way he handled her and made her look like a right knob!!!!!! Congrats to that man!