Most preposterous couple?

[Alan Brady's Hair]

I was watching an episode today where Jamie Farr was part of a couple with Heather Locklear, and he was acting like a madman because he was afraid that he couldn't "keep up" with a younger woman. By the end of the episode, he confessed his fears to her, she confessed to enjoying just slowing things down sometimes, and they disembarked a seemingly happy couple. Farr was almost 50 at the time, Locklear was 22. Locklear looks like Locklear, Farr is, uh, average-looking.

Now, obviously there were many horribly mismatched couples who arrived at the Love Boat together and left separately or with a new person who fit them like a glove. But among the couples who left the Love Boat seemingly happy together, were there any that were more preposterous than Farr and Locklear? I'm guessing most of these would come from the old man/hot young girl category, but maybe there are others?