The Susan Kennedy and Paul Robinson performers said that they "clash" over politics, though neither actor disclosed any information about their views.
Dennis joked: "Just never talk politics with Jackie. If there is one subject she will fire up about, it's that one."
Woodburne retorted: "That's absolutely what we clash about in real life, but in a fun, energetic and no-hard-feelings kind of way."
She added of the pair's relationship on set: "We both love chocolate and will regularly bring for each other a sample of something we've found new and munch away in the green room critiquing our latest high-calorie discovery."
The Ramsay Street stalwart also refused to rule out a potential romance between Susan and devious Paul, adding: "Never say never!
"I think they'd probably have to be trapped in a bomb shelter or something, though - then we might see some action, otherwise I doubt it!"