3 blinds in a row

Think this A-/B+ list mostly movie actor from an acting family knows the other actor in the family has hit on the wife of the A-/B+ list actor? / This A- list dual threat actor recently picked up a fairly big award. He celebrated by ditching his wife and spending time with a woman who walks dogs. / Speaking of cheating, it looks like this host of multiple shows on differing networks is trading in his long time girlfriend for a flight attendant he has long been hooking up with but decided to make more permanent.