Buttercup has a very difficult decision to make when she gets out of the fire swamp. She can either die with her true love or surrender to her husband-to-be. Humperdinck says that if they surrender he will allow Westley to be free, that he will not hurt him. When they exit the fire swamp, Buttercup must negotiate with Humperdinck to ensure that he will not hurt Westley. Wanting to keep her love safe, Buttercup surrenders. I probably would have made the same decision in Buttercup's situation. When she is making this decision, she doesn't know that Humperdinck will go against his word and torture Westley. She believes that as long as he is alive, Westley will come for her. Based on this idea, she thinks that surrendering is the right decision because it means that she will get to be with her true love in the end. For these reasons I think that I would have made the same decision.