@Eaglebauer Said
The "God, I love when you come in here" is a pretty strong signal I think. It goes past common courtesy and is much more personal. As a guy, I wouldn't say something like that to a woman if I wasn't attracted to her.
It may be awkward for you, but I think Kristy and Bozie are right here...just ask him if he wants to get coffee! If that's too much of a leap for you then try what you mentioned and see if he bites.
Have you given him much back in the way of signaling that you're interested in him? He might be waiting for a strong indication that his advance would be welcome...
I was a bit concerned that the "god i love it when you come in here" was more related to me being an easy customer as i have had dealings with the postal services for many years, as part of my work i send lots of items, so i know exactly what i need and how much it costs to post everything so it makes his job much easier.
I wont ask outright for coffee but will mention asking if the coffee place is good or where can i get a good coffee.
I have signalled anything really, i am just polite and friendly, which is my usual way i behave anyway.
I don't see much in the way of him doing anything phsyical such as being nervous around me or winking or anything...so i am unsure if he is friendly or more than that....tough one.