When any guy starts making friendship comments / telling me they love me or any of that bollox, I quickly take it back to the situation we are in and them paying me to provide a service.
I had a guy tell me he loved me a couple of days ago, with a hint of what I was up to the rest of the afternoon, I responded with 'That's all well and good, but you'll be getting volleyed out the door at 4pm sharp, you aint the only customer who wants to bang my ass today'. I said it playfully in between snogging him, so kept it lighthearted, but if you give even the slightest inkling that you are friends, then it's asking for trouble IMO.
Maybe have a few witty replies lined up so that you can use them in those situations?
Natalie xXx