TMZ caught up with the "Yellowstone" actor and his wife of more than 2 decades, Ruvé, after he claimed on Wednesday's "Nothing Left Unsaid" podcast he "lost everything" as a result of being let go from production for ABC's "Scoundrels" ... and then being blacklisted from Hollywood -- all for refusing to get intimate with another woman on screen.

Neal McDonough, who has a strict rule about kissing his onscreen costars, claims Hollywood "turned" on him for the conservative stance.

The "Suits" alum, who won't lock lips with anyone other than his wife, also recalled being fired from a TV show for refusing to film a sex scene.