Haven't seen it - is it a documentary Sweet?

I think it's a fake reality show

I've just had a look on Wiki and it's apparently on the up as a genuine 'reality' show. Be surprised if they were genuine Jersey boys and girls though!

It reminded me of the real world! Only with chavs! The bit I saw, the roomies pranked one of the lads by putting all kinds of cheese in his bed, then he met a girl in club & took her home with him.. But he couldn't do her because he thought SHE smelled of cheese! Too cringey lol

They are a bunch of ugly people who think they are better looking than the people they meet. They obviously have magic mirrors.

Ahh I love it!  The first season was like an 18cert  Big Brother.  8 people put in a house together with cameras on 24/7 but unlike BB there was full on fights, sex in the hot tub and too much alcohol.  The egos have now skyrocketed but the goal (for them) is the same, find a hot girl/guy and take them back to the house to 'smooch' even with your mates in the room watching   They make me laugh though with their over inflated egos.

Did they all know each other or were they strangers?

They were all strangers at the beginning, now most of them have swapped saliva at some point.