The mother gets pregnant with her son as the father

The final part of the film is more romantic than erotic. They make the father leave the house for them leaving together alone. Few time later, they discover the mother is pregnant... and both know the son is the father. They decide to have the baby and live the three of them happy together.
"you wish such a happy ending. getting pregnant of the man you dream about and living happily with him forever" James whispers in his mother's ear
then he gets up "Sorry mom... i know you didn't want to watch porn. i'll get a mope to get this mess clean"
As he leaves, his mother gets wet about the idea of having a baby... and she can't get out of her head the idea of having it with her son...