By Victoria Johns Nikita Kuzmin was seen with his head in his hands at the Celebrity Big Brother wrap party after a tense discussion with his girlfriend. The Strictly Come Dancing star, 26, who came second on the show, was met by model, Lauren Jaine, after the finale before they headed off to the afterparty, laid on by ITV. However, in shots taken from the night in which most of the housemates let their hair down, the couple appeared to be involved in a heated exchange. In one snap, Lauren can be seen touching her eye as Nikita gesticulates animatedly while in another the dancer puts his head …