Once in the Mystery Shack, Bill immediately set a goal for himself. To get Dipper's heart in his favorite way, he began to spend more time with him and watched so that Wendy did not come close to him. And in principle, she did not come close, at that moment when they were alone Bill dragged Dipper into his room and pushed him onto the bed leaning over him.
Bill: I want your baby. He said suddenly, to which they looked at him with surprise. Even shock.
Dipper: Are you... an idiot? I'm a guy.