Trying to find a book!

I cannot remember the name of this book at all! I DEFINITELY remember it being a Yaoi/BL book, and I remember a scene (A scene, not the story being about this) where the love interest is an equestrian rider and saves the MC from being hit by a ball (I think it was a ball, they were playing some kind of game on horseback). What I THINK I remember is it possibly being an omegaverse? I'm not quite confident on that though. If someone knows this book, that'd be great! Please help TvT