When using reverse psychology, you ask for or do the opposite of what you want and through the magic of human nature, you end up with what you really wanted.
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Her: "I just want to be friends." You: "That is exactly what I was thinking and was going to suggest it myself. I think you and I would be better off as friends anyway."
Her: "I am not ready to make love." You: "Now that you mention it neither am I. I think we should wait and really get to know each before we even consider having sex and just cuddle."