1. I am worried that they have no intention of buying the house at all, but are just stringing us along to get more information out of us.2. He's not your friend. He's been playing us all along. We are so stupid.
 string somebody along play somebodystring along 很貼切的形容玩弄的感覺，請參考例句
When I asked him for directions, he gave me a goof smile.