If you fancy her that much and she's single, why not ask her out on a normal date instead of being so underhand?
It would seem from the op that he "really fancied the woman who was as fit as fuck and he fantasized about exploring her beautiful body", so my guess is she was out of his league.
It seems he's seen a possibility of making his fantasies a reality by apparently taking advantage of her vulnerability by offering money for sex.
Other than that, we don't really know the background.
However I think he will have got the message that it's not behaviour becoming of a member of the honourable association of UKpunters, and will wisely keep his head down for a while.
To the op....give her a loan if you want to. It's your money, but be cautious about what her motives are as well as your own.