Blake and his family did everything they could to protect the Moretti women. They already had one in their house, and the second one was saved from a fate worse than death. One look at Hope and Blake knew she was his. He just had to keep her safe.
Hope was desperate to get away when the Maclean mafia stepped in. They took care of her and did everything they could to protect her, even if it meant marrying Blake. When an avenging angel helped with the problem and took the monsters away, Hope didn't think they had to rush into marriage anymore.
Blake didn't care what happened—she would become his no matter what.