before CBB

http://www.mirror.co.uk/3am/celebrit...r_Image_Story1

I dont think the Lewis/Marnie thing is real but this doesnt really prove anything. They have the same management so it could of been a PA they were doing together. Also Marnie was engaged to one of Lewis' best mates so its no shock that they met eachother.

And all the FMs saying BB is all above board and anybody who questions it is a tinfoil hat conspiracy theorist.
Of course a lot of this is contrived, especially the house showmances.

You would have thought something would have come up in conversation all I've heard her say is "she's never met anyone like him"

If this was civilain BB that could be an issue.

But lots of celeb contestants know each other. Sometimes BB deliberately puts in housemates with a past history (e.g. Brigitte & Jackie in CBB3).

Maybe it has? We only see the highlights

Yes, its very possible, not really getting much chance to find out what makes em tick

Her ex has claimed that Marnie and Lewis had something going on while he was with her.

It's neon sign obvious what makes them tick. A desperate need for fame and whatever paycheque they get for being on the programme. Not rocket science.