Former real-life couple Jesse Spencer and Jennifer Morrison had to pucker up for the cameras on the set of TV series House when their characters fell in love again.

The ex-couple admits their upcoming kissing scenes in the medical drama were more than a little awkward. And Morrison admits that the co-stars agreed not to actually lock lips until the kissing scene itself.

She says, "Out of respect, I saved it for the take."

But Aussie star Spencer admits the former couple's relationship woes helped in the tense scenes: "There's a different intensity now, but I think it really works."

(This news article provided by World Entertainment News Network)