Boyfriend wants me to sign a prenup

I am 23 years old and I have a boyfriend. We have been together from I was 20.

He comes from a middle-class family. His parents have three homes in St Andrew and they have very good jobs. His parents have two cars. Both parents drive to work. The only time that they drive together is when they are going to a function or church. His parents know me very well. His father told me that he accepts me as the daughter he does not have.

My father is a country farmer. Whenever my boyfriend takes me to the country, my father gives us ground provision to take to his home. My father has several acres of land in the country. My boyfriend’s father says that he is rich but he does not know how to develop the lands that he has to become very wealthy.