My experience with love interests when I make a decision such as the one I lay out in the previous paragraph is that this course of action will end whatever it is that is going on with me and a love interest such as this former cashier. When I make a decision to let go of one of these kinds of love interests, I never get anything back from them expressing a desire to move things to another place.
I might conclude from my experiences of letting such love interests go; an experience where my decision to shut down my role in the dance effectively ends the whole situation; I might conclude that these love interests only wanted one-sided attention from me. Once it became obvious that the attention from my end was not forthcoming, that ended the whole deal. For them to answer such a shutting down of attention from my end of it with a, "Hey wait, come back," type gesture would involve risking rejection from me, which is something they never really wanted to risk, apparently.