I have an encouraging anecdote on this actually. I was with this girl and we came back late from a museum where there was only the two of us and some old lady left, so we traveled with her back to the city. I made polite conversation all the way with the old lady about her grandchildren and whatnot.
Once me and the girl got inside her door (I was staying at her place), she told me that she was impressed by how nice I had been to this old lady and that it turned her on a lot and she wanted to do me now.
(to be fair, this was not the first time or anything, but still. Being nice does not need be a turn-off.
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