[aaronem]

"Creepy" is shorthand, which most men are at a disadvantage in understanding on account of not having spent a lifetime analyzing men as potential mates. (And now you know why the "gay friend" trope exists: as a bridge between the worlds.) In this case, "creepy" probably has a lot to do with anyone dense enough to try a cold sell in a coffee shop being unlikely in the extreme to make a worthwhile partner even if humored.