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.
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."