During the pilot, as far as we know, no one fell in love, got married1), or otherwise was romantically involved because of Improbable Island.2) This was likely a good thing, as it meant we couldn't be blamed as homewreckers or anything.
With the advent of Season One, marriage was made possible on the Island, much to the fury of Seth and Emily3), who had up until now been the only eligible types on the Island. It was promptly examined by Count of Saint Germain and Epaphus, who christened the marriage system4) by proving that the Island's minister at the Bluerock Chapel in Kittania does not discriminate by gender5), although some few6) threw the required tantrums in the streets over it. They got divorced a short time later, having siphoned all the charm out of each other, and - when the world flickered and ceased to exist for a brief moment when a Reset struck - all trace of this marriage vanished from the collective consciousness. During Season One proper, Kassil and Haley were next up at the altar,7) also curious about the effects, but show no signs of getting a divorce8) as quickly as CSG and Epaphus did.9) More Resets struck, leaving everyone on the Island once again unwed; Kassil and Haley, however, have laid claim to being the first once again, for reasons known only to themselves.
Whether this added function will result in chaos10), panic11), anarchy12), or joy13), peace, and prosperity remains to be seen.
Marriage Pros
Marriage Cons
The list of Registered Couples!17)