I wondering if it was because he was scared about once saying they would have date on the outside when he was questioned on the hotseat? and by doing it in the house he will get out of it later? at the end of the night it still didnt seem like he was any more into Jade, than before the date, she pretty much makes all the moves, and he should be more keen and affectionate towards her now.
He played one of his cards. The date gave him air time