Loose Women star Nadia Sawalha, 55, who has been married to TV producer Mark Adderley since 2002, has opened up about the "massive row" they've had over their 18th wedding anniversary.The ITV presenter told This Morning presenter Ruth Langsford, 60, all about why they've had an argument in the first place.It all comes after Ruth brought up the subject of Nadia and Mark's wedding anniversary on Loose Women today.The This Morning host started the discussion by stating: "It's your wedding anniversary very soon," to which the EastEnders star corrected Ruth by saying: "No, I just had it."Carrying on their conversation, Ruth continued: "How many years?" and Nadia replied with: "18 years."The ITV host went on to ask Nadia about how she and Mark.