Mr Hugh wants me to have his heir?

The elderly gentleman I care for happens to be in forbes magazine. I checked him out. He was sincere with me and told me that all his riches cannot buy happiness or a family. He made a proposition to me last night. He looked at me square in the face and asked, "Do you want to have my heir? I didn't get it? He said " have a child with me and he will be the heir to all my Estate" . I have never been pregnant, and here is a man that wants me to have his child...what should I do? I dont even love him. sobs