I've just finished watching episode 5 - why is it so compelling and yet so morally reprehensible? Fwiw, my impression of the remaining couples is:
Mark and Jessica - shouldn't have got together in the first place. I think both of them only went into it to spite Barnett, and I don't like Mark's line in emotional blackmail. If they make it to the altar I shall be very surprised.
Giannina and Damian - he isn't good enough for her by a long way and I predict he'll be too stupid to realise that and will be the one to end it.
Cameron and Lauren - they're both lovely but they don't seem to have any chemistry? I don't know, perhaps that just means they don't have a lot of unnecessary drama. I would like them to make it even if I don't think they will.
Amber and Barnett - seem well-suited in that they're both narcissists and are clearly going to be one of those couples who are constantly having screaming rows and breaking up, but end up back together because they have a great sex life. They shouldn't get married but they probably will.
Kenny and Kelly - seem the most likely to make it but they don't seem to be getting as much screen time as the others for some reason, which makes me think something isn't right with then. Why are they being so weird about not having sex, though?
I'll be fascinated to see how much I got right and to watch the reunion shows.