1) Ellie and Gary: The son who never made it in Dallas, yet made a fortune in Knots Landing. You just gotta give Barbara Bel Geddes and David Ackroyd / Ted Shackleford an applause, for their chemistry. Gary was Ellie's favourite son full stop, so much so a favourite 80's mama bought her middle son a house; in a cul-de-sac, away from all the family's back stabbing and bickering. She done just right and so KNOTS LANDING was born, from a viewer's perspective - DALLAS.
2) Angela and Richard: Who would have thought about the twist at the end of season 6? The 45 year old man who longed for a family and believed that cartel boss Jacqueline Perrault was his mother actually wasn't. The next three seasons thereafter had plenty of ups and downs, between the newfound mother and son. They actually had some of the most meaningfully touching scenes towards the latter part of season 7 I had ever watched in any show - FALCON CREST.
3) Alexis and Steven: Al Corley / Jack Coleman's character was the ba of the ex Mrs. Blake Carrington, at least until Amanda showed up. They gelled well together, in comparison to the early friction between Steven and Blake. Adam was a Johnny come lately, if you were to weigh the scenario up. His mother and him were still as thick as thieves though - DYNASTY.
4) Sable and Miles: Ever the over protective mother, Miles was definitely the blue eyed boy. Maxwell Caulfield's character could have went with a female elephant and she wouldn't have thought any less of him - THE COLBYS.
5) Melissa and Joseph: Despite her dangling the paternity of her child, to the two prospective fathers Melissa always had Carlo's grandchild best interests at heart. Who could forget her feeding Joseph the grapes from the one and only vine her deceased mother planted, while reading about Angela's 'Hit & Run', in Richard's newspaper. Melissa to the core - FALCON CREST.
Another verbal ding dong between Maggie and Angela gets going, over the bole Richard, (a scene from season 7, 1987 - '88):
Maggie: "Okay, you wanna know the real reason Richard agreed to marry me?"
Angela: "Of course."
Maggie: "He wanted to give me the pleasure of having you, for a mother in-law. Uh, I can't figure that boy out!"