Hard truth is his feeling for you is in an entirely different category than yours to him. As a baseline, his 'feeling' is that of an obligation to deliver service for which he is being compensated for. And as is any business, he is understanbly looking for a repeat customer. Taking further steps, if he deems you as a good customer and you were keen to repeat order, his 'feeling' is that of a preference to work with you (who is a good and a repeat customer) than to work with other customers who might not be as a pleasant. That doesnt meant he has romantic feeling for you but rather you are simply a 'preferred customer'. From his pov, whoever the client is he would be compensated nonetheless - so might as well work with someone who is more pleasant, just like any business out there. When you firmly become his regular (thus generating stable income), he might provide 'above and beyond' services or acts eg off-clock activities or bit lax on cut-off time or jigging his schedule to match yours - his 'feeling' is that of maintaing/ servicing client relationship for his 'preferred client'. As many business would do for their big clients.
A hiring relationship can only, against all odds, become a real romantic relationship if and only if there is absolutely no monies involved.