Wait... Infertile? Like cutting his balls off or something..?! This... Does not sound loving..A BIT TOO EXTREME...infact.4-there a scene where the bull and her having sex and the bull gets more excited when she bad mouth her loving bf so she tries her best to do it so he can fuck her harder,she talks about how she is gonna make her bf infertile by many ways and she doesn't know her bf was listening that time.
I think this is gonna lead into hard NTR,with her leaving him....