@QuickNameChange22
By my reckoning there are five kinds of couple swapping in the Australian MAFS!
The official where they pair folks up with different partners to learn how others relate for a night or weekend.
And there is the unofficial where individuals have a secret assignation with someone who is someone else's 'husband' or 'wife' on the show.
There is the unofficial that leads to the official where if someone has a really crap pairing and then they 'make a connection' with another person, they can stay in as a new couple!
There are a few people who come out of the experiment and come back in as a new couple in the same season.
And finally, there are a few people who come out of the experiment and come back in as a new couple in a new season.
We've had all this in the Aussie one but not sure how many versions they have in the UK one!