"Big" Macintosh Apple is the strongest mortal in the land of Equestria.  Usually in charge of his hyper hormones, the nine feet tall stallion can always count on his giant wife to drive him up the wall.  He'd do anything for her, including her repeated demands to be wrestled down and ravished.  Now, her lusts are growing stronger, and, as a special anniversary gift, his hulking beauty has declared it's time to expand the herd and fulfill their mutual exotic tastes.  Who will fall to the mixture of gentle romantic and out-of-control sex wrestler?

Gore refers to occasional fight scenes that may include mild blood; it's not going to linger on them. Sex starts in Chapter 2.

Chapter 2: Wrestling, rough sex, het

Other tag includes two characters who are spoilers (please spoiler mark in comments once they show up), griffons, thestrals, and shenanigans.