Danny and Sandra Dee from Grease last forever, have at least 2.5 children, a dog, and a house in the suburbs.
Wayne Campbell and Cassandra totally break up. He’s way too juvenile for her, and I’m sure Stacy would somehow make her life a living hell until she dumps him.
Barry and Lena from Punch-Drunk Love are in it for the long haul.
Miles and Maya from Sideways? Six months, tops.
Grace Kelly and Jimmy Stewart broke up shortly after the end of Rear Window.
Come to think of it, Grace Kelly never lasted with any of her co-stars. The fools.
Regards,
Shodan
The Proposal (I was bored. Sorry.) As soon as the glow of his potentially owning 50 million acres of Alaskan wilderness (and small town) wears off, and the green card shows up, she’s gone. He throws a party to celebrate and moves on to another book publisher where he rises to the level of senior editor in a perfectly ordinary amount of time.
You, like many of the other posters, have an intersting (read: horrifying) definition of romantic comedy.
I’d forgotten about the boyfriend whose only crime was to be allergic to things. I think the kid being there will make them stay together though.
The couple in the 40-year-old virgin are definitely in it for the long run.
OTOH, Wade and Allison from Cry-Baby soon learn a whole lot about wife-beating and alcoholism.
cuz he’s sleeping with the adopted daughter!
Absolutely agree with this! Hopefully Ross went back to Julie.
Another couple who last: Marshall and Lily Erickson. (helps that it’s canon)
Do we actually know if Chewbacca is a dude?
This is why there is so much Kigo fan fiction. 
I don’t think the leads in Lost in Translation wound up together. I never have.
Ron and Yuri make a much better couple, but I did like the way they handled Kim/Ron in the fourth season.
And there’s no way “Drago” went well, sorry.
Hell, Kigo is practically canon.
I’d like to think Seymour and Audrey from Little Shop of Horrors had legs - came from the same background, had the same modest expectations, etc. But Audrey had terrible esteem issues (as evidenced by her pathological abusive relationship prior to Seymour) and there were just too many corpses around by the end for things to end well.
Do we actually know how many sexes, if any, there are among Wookies?
There is a concept in many cultures describing the “Good Death” and I think that this might just qualify…
One thing we do know (after forcing some Bothans to watch this) some Wookiees fantasize about human partners. The ostensibly male one appeared to get off on a watching female human. Also, Chewie has a wife and kid.
Gilmore Girls: Lorelai and Christopher will have broken up and divorced shortly after their wedding. What’s his name will have cheated on Rory again and Rory will have thrown him out for good. Finallly.