It's the start of In-Laws Week, and a careless comment leaves one wife's mother in tears when the family come to visit. Plus, a brand-new couple join the experiment! Hoping to find her fairy-tale happy-ever-after, a new bride is in search of her very own Prince Charming - but will his grand efforts to woo her succeed?

More of the married couples' loved ones visit for In-Laws Week, but one husband receives a damning review, while another new pair join the search for love.