It's a fun line from an interesting character, and our Metallic Mr. Spock has fast become the series' most valuable player. Logan and Jessica remain rather un-charismatic and bland -- but REM? He's cool, and certainly one of Lt. Commander Data's inspirations/antecedents.
These two machines care for a lonely adolescent girl named Lisa (Lisa Eilbacher). She's lived there in that underground bunker all her life, and following the death of her father, has been all alone. But now she's an adolescent and suffering from pangs of love for the handsome Logan.
Looking across the 1960s and 1970s, it is fair to state that this story recurs quite a bit. There is an element, indeed, of "It's a Good Life," but Lisa is not a sociopath like Anthony is.
And, similarly, this was the era of Carrie (1976), the Brian De Palma film about a lonely, shy girl gifted with rare and terrifying psychokinetic abilities.
This isn't a terrible Logan's Run episode, but nor is it a high point, either. he story appears contrived in a lot of ways. For instance, there is no convincing reason why Lisa would not go with Logan and Jessica, if just for a while, once peace has been made.
Also, another problem is this odd counsel of Logan and Jessica. They encourage Lisa in "The Innocent" to get out there in the world, and meet new people, so she will no longer be alone. At this point, it seems that the writers believe they are working on Star Trek, or in some other universe of multi-cultural understanding and utopian civilizations.
Another problem I have with Logan's Run (the TV series) is simply that it is accomplished so cheaply...and that this cheapness seems to limit the imagination of the series writers. Obviously, the creators of this TV program couldn't afford to create believable societies for Logan, Jessica and REM to encounter each week, so instead, the plan seemed to involve having them accidentally happen upon laboratories, hospitals ("Fear Factor"), dream clinics ("Futurepast") and other unlikely mini-settlements.
This keeps costs down, but also raises questions. For instance, how do post-apocalyptic hunters have a fully-powered house ("Capture?") Where do they get power? How do they sustain it? After the fall of civilization you just can't assume the electrical grid is up and running.
Fortunately, "The Innocent" provides a nice easy answer to these questions: Lisa powers the whole facility with her psionic abilities.