I watched it and found it quite interesting. Was surprised they didn't let the participants know that they would be sharing the one bed. However I do think if they didn't want anything to happen it woukd be easy enough to have pillows in the middle or take turns on the couch.
I found 3 of the couples genuinely wanting to fix their relationship. The gym couple, the guy seems to see it as a big joke.
Then again I don't think 2.5weeks and being on tv is a real test bc it's not long enough for people's true personality to show.
I will be tuning in.