If you're willing to pay, there are writers here, just write to them.

Bushido, it looks like NTR Master does accept commissions. Look around on his Unrelenting Cruelty site to find his contact details.

I don't really understand what a master lover is, but Fiverr has writers who will write anything you wish. Fiverr.com

I think you've got a slight misread. NTR Master, aka Unrelenting Cruelty, is a writer. https://unrelentingcruelty.wordpress.com/

Generally, his stories involve the main character not only getting cucked by his wife (and his often daughter too), but the women will completely betray him. Oh, and the women will typically leave the MC for the bully (hence, NTR Master as a pen name). Think Nebic, without the snuff and you won't be too far off.