All three marriages function. They are not unhealthy for anyone involved. They just aren’t perfect.
That was one of my favorite Wash lines.
Considering that it’s a parody of film noir, where cheating and skulduggery is the norm, I’ve always liked that Jessica and Roger Rabbit had a surprisingly stable relationship (well, as stable as a cartoon sexpot and an animated rabbit can have). They’re faithful to each other and stably attached, despite their both having their own movie careers.
Tony Stark and Pepper Potts in the Iron Man and Avengers movies.
Dr. Ken and Allison on Dr. Ken. No one’s watching, but they have a great relationship.
Especially because…
When Nomi starts seeing other people, she’s completely open about what’s going on, making her extremely vulnerable, and Amanita believes her and is supportive. Contrast that with the other seven’s complicated secrets and lies.
Fifthing (or whatever we’re up to now) the Taylors on Friday Night Lights. Just a lovely, realistic, intelligent and passionate couple. Some arguments, some crises, but they were never very far apart. And solid parents, too.
It’s Jake Weber. 
(I wouldn’t argue but I had the first fan page for Mr. Weber back from his days on American Gothic.) And I agree re: Joe and Allison. He was a saint for having consistently interrupted sleep, too; good parents as well. You may be happy to know they were together until the end… kinda
Spoiler for the finale:
In keeping with just about every character I like, Joe dies in the last episode. No frickin’ reason, they just kill his ass off.
I’ll add Tom and Barbara from the 1970s UK sitcom The Good Life (or Good Neighbors as it’s called here in the U.S.). Tom was a jackass at times but Barbara supported him and also called him on his jackassery, and he loved her for it. Plus, a terrific and rare example of a functioning, youngish (Tom’s 40, Barbara’s… well, not sure how old she is, probably early 30s at the most) non-angsty couple with no baby or kid storylines. Child-free and very, very happy.
I’d say Rob and Laura Petrie as well, from The Dick Van Dyke Show.
Bob and Emily HArtley on The Bob Newhart Show?
I cringe when I see them painted as a great couple. He was a shameless play into women’s fantasies, essentially the male equivalent of a Manic Pixie Dream Girl.
By contrast, the Taylors on FNL were written as actual people.
It’s brand new but I just finished watching Master of None - Aziz Ansari’s new show on Netflix - and his eventual long-term relationship is very normal and healthy.
Elan and Haley in The Order of the Stick have a pretty healthy relationship. They’re honest, faithful, supportive, and respectful to each other. Also Nale and Sabine from the same series.
Billy and Georgia from The Dresden Files. A happy couple of werewolves with a smooth home and work life. They even fight exceptionally well together, working with each other’s strengths to take down foes stronger than the two of them combined.
Aral and Cordelia in Lois McMaster Bujold’s novels about the Vorkosigans.
Is that just a bare opinion or is it supported by objective research?
Helen Fisher — http://www.helenfisher.com — has done significant research on infidelity, and some of the many points she makes are that (1) infidelity is extremely common, (2) infidelity is not necessarily a sign of an unhappy relationship, and (3) infidelity does not necessarily end relationships.
Indeed, other research I have read shows that there are many other factors that are more likely to end a relationship than infidelity.
Recognizing the role of infidelity in relationships also is a recognition of humanity. A person or a relationship has ups and downs, his or her behavior has ups and downs, events can affect behavior and feelings.
It’s simply not true that infidelity is always a result of something wrong in the relationship.
It’s something that can happen in a relationship. It’s something that can affect a relationship. But its causes can come from multiple different sources, and the status of the relationship might or might not be made worse or better in the long run as a result.
Esther Perel — http://www.estherperel.com — has also studied this area. She suggests that infidelity often happens as the result of traumatic events, and that it’s not necessarily indicative of a “deeply flawed relationship.”
http://www.estherperel.com/2014/03/changing-the-view-on-infidelity/#sthash.1sVxZH12.dpuf
And that’s a good point. Lust is inherent to the human personality, and its existence is independent of whether or not a person is in a good relationship. Acting on lust is very often a circumstantial phenomenon: Is there opportunity? Is it easy? Is the other person attractive? Is the person’s emotions being affected by traumatic events?
Do Marshall and Lily from How I Met Your Mother count? On the one hand, the show clearly wants the viewer to identify them as the annoyingly perfect couple. Oh the other hand, they have had their fair share of issues. IMO, they count as having a healthy relationship, since they always ultimately resolve their issues well and are constantly learning and growing together. Kind of the gold standard of a healthy relationship: highly functional and constructive conflict resolution, rather than the absence of conflict.
One of Jamie’s coworkers kissed her; she kissed him back. Then she stopped it. So, it depends on your definition of “cheat.”
Aren’t most couples on “family” sitcoms pretty healthy? Not necessarily perfect, but healthy enough to keep the kids out of danger and to make it ok for weekly hijinks to be funny and not horribly uncomfortable to downright scary.
Plus you just knew that they were at it like rabbits.
For a non-romantic relationship, Augie Doggie and Doggy Daddy. Warm, mutually supportive and respectful. The opposite of the usual idiot father and smart-ass offspring in sitcoms.
Regards,
Shodan
Okay call me weird but I have to say The Osbornes. There was one episode where at the end Ozzy & Jack sit on the couch to watch TV - they were bickering or something I think, then The History Channel comes on and they both stop, look at the TV, and Ozzy puts his arm around Jack and they settle back to watch the show.
You’d figure they’d be dysfunctional but they all seem to be actually very supportive and loving of each other.