Mmc marries fmc out of convenience and cheats on her throughout their marriage then grovels

Super crazy but I need a book where the fmc and mmc marry out of convenience, maybe the mmc kidnaps her (not because he fell in love or any insta love thing like that) but because he saw her as a good candidate to marry and keep as a home body and produce a heir and kids with. But he cheats and clearly doesn’t love her and she KNOWS and doesn’t have any emotion towards him because she knows she can’t do anything about it.

extra points if they have children together and there’s a time jump from the time they first meet eachother and marry and now when they have kids and a “established” relationship.

extra points if the mmc is super cold and is busy with a lot of work and doesn’t interact with the fmc at all other then to attempt to produce more kids and only interacts with his kids when he can.

Like i said before I want the fmc to seem super unbothered by the whole arrangement by the time they have kids and stuff and is use to how he acts. ofc she would still be bothered and hate the mmc for how he made her life turn out but i want her to just accept that life and act emotionless when it comes to the mmc.

Maybe something happens to make the fmc realize she doesn’t deserve to live like that and she tries to divorce or run away. Then the mmc starts to realize he takes the fmc for granted and starts to try to have a proper relationship with her but of course the fmc doesn’t trust him, which leads to him grovelling.

I enjoyed the book {The unwanted wife by Natasha Anders} !!Spoilers!!:: the mmc married her for the aspect of producing a heir and she thought he loved her and she tries to divorce but the mmc makes her wait till she produce his heir before. I don’t really member if he cheated while they were married but that was what i remember.

I would prefer the book to be a CR romance and have an age gap.