It's well known that Tiffany fancies the pants off Mr Day, even calling him "so sexy" to his face, but he's politely reminded her he's happily married to wife Stephanie and a one-woman man.
Chatting with Steph in the garden last night, Tiffany said: "I think Darren is sexy. I've been stopping myself looking at him."
Steph replied: "For his age he's a very good looking man."
Tiffany then confessed: "Child, if he wasn't married, I would have had that. Right up there in the snug, oh yeah."
Darren then joined the conversation – presumably unaware of what had just been said! – and Tiffany showered him with compliments again. After Darren said he needed to lose some weight, she told him: "You are perfect right now."
Darren has admitted that Tiffany's crush has made him uncomfortable, saying: "A couple of things she's said to me has made me feel a bit uncomfortable, I keep her at arm's length."
Meanwhile, his wife Stephanie was on ITV's Loose Women yesterday, where she said: "Well, to be honest with you, I did find the first one a little bit hysterical. The second time I was watching with my 17 year-old son and at that point I wanted to drag her through that telly! The after show party will be interesting, won't it?"
CBB continues tonight at 9pm on Channel 5.