Love or leave?

  Today is now a rainy cold day, and I am watching my third t.v. show. The first one was Smallville, the second was A Ring of Bright Water, and the third is Old Yeller.
All three have the same theme.
In Smallville Lana got superpowers and so she and Clark work together as the newest and strongest Super couple. At first you think this is great and the two will live happily ever after. But Lana becomes infected by Kryptonite and can never be near Clark again so the two become Star Crossed lovers.  That of course leaves Clark free for Lois Lane, but Clark doesn't know that yet.
In the second one a divorced writer adopts a wild otter and calls him Mitch and the two become friends. They move to Scotland and live there and I won't tell you the ending.
And well everyone knows the story of Old Yeller, so I won't tell about that one at all. But the theme in all these shows was the same, It is better to have loved and lost then never to have loved at all.