Thanks guys! I played the youtube and my husband came running over to watch. “I remember that!” He knew all the words to WTYFGH. And I knew the whole chorus of LAS, once it started playing.
Ah nostalgia. This proves we’re old, doesn’t it?
Thanks for all the replies, you people have much better memories than I do. The theme song keeps running through my head as well, LAS just brings back fond memories from my youth. Thanks to this thread I just remembered Happy Days was originally a LAS sketch!
Opening credits from the Happy Days episode.
Never much liked the show (it was too boringly adult for my sex-oblivious preteen self) but I definitely remember the theme song. I think I was another one who saw the end of it while waiting for the cartoons to come on.
I do remember, though, that all the episodes were named “Love and <something>.”
We watched it recently (a few months ago) on one of the off-channels, just for nostalgia’s sake. Wow, what a time capsule! 
I don’t remember much about the episode, except that one vignette was about a shy guy trying to impress a girl in (his? her?) apartment, and the other one had two married couples in a restaurant and had something to do with a cute young waitress.
If it’s the episode I’m thinking of, it ends with (IMHO) the world’s greatest Jack Benny impression.
Possibly this episode? Sounds similar to vignettes 1 and 3.
No, I don’t think that was it; it doesn’t sound familiar, and there are way too many of those in the list for me to go through and try to figure it out! I think there might have been a third vignette (or maybe we watched two episodes) involving a very sexist employer, his secretary, and his wife at the office.
The only sketch I remember from the show is one where this mom always had something critical to say about her son’s dates because they were never good enough for him. (The son was in his early 30s.) She knew that she had a problem and told her friend that she realized she was hurting her son and so she vowed to fully accept the next girl he brought home. At the same time, he was telling his friend that since his mom wouldn’t accept any of the nice girls he brought home, he was going to pick up the trashiest hooker he could find to get a rise out of his mom. Hilarity ensued.
So from the start the premise of this show was a no-go. No wonder it faded into oblivion.