Sir Keir Starmer refused to reveal how many women he had slept with - not following Nick Clegg into revealing his sexual encounters.
The Labour leader batted away a question about any past conquests as he was quizzed on the Never Mind The Ballots show.
Ex-Lib Dem leader Nick Clegg revealed in 2012 in an interview with Piers Morgan for GQ magazine that he had slept with "no more than" thirty women.
But the steadfast Labour chief said: "I'm not going to answer that one".
The party leader also refused to follow in the footsteps of Theresa May in revealing the naughtiest thing he had done.
The ex-PM once revealed that she had run through a field of wheat as a child.
He added that no politician ever gives "an honest answer when asked".
In a quick-fire round for the new political show - that you can watch on our website and The Sun's YouTube channel - he revealed his favourite crisps were salt and vinegar.
His favourite tipple at the end of a long day is a Pale Ale and he also told how he doesn't have any tattoos.
The vegetarian told how he shares his curries with his family - but he will opt for a chana masala.
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He was slightly out on the price of a cost of milk saying it cost about £1.10 - but it's closer to 90p.
Sir Keir also told how he wasn't religious so not following in the footsteps of former Labour leader Tony Blair.
He said: "No, I'm not. I'm a great believer in faith. But I'm not personally religious."
- Watch The Sun's brilliant new politics show Never Mind the Ballots on and
KEIR TACKLES YOUR QUESTIONS
The Sun's Harry Cole grills Keir Starmer with your quickfire questions:
Harry: "What is your favourite crisp flavour?
Sir Keir: "Salt and vinegar."
Harry: "Curry order?"
Sir Keir: "Well I'm vegetarian, so chana masala, vegetable curries... something like that."
Harry: "What is the worst date you ever went on?
Sir Keir: "I am not going to reveal that on your programme."
Harry: "How much is a pint of milk?"
Sir Keir: "A pint of milk is about £1.10."
Harry: "Do you have any tattoos?"
Sir Keir: "No, I don't."
Harry: "What is your weirdest habit?"
Sir Keir: "I don't know what my weirdest habit is..."
Harry: "What was the last book you read?"
Sir Keir: "I am reading ... there is book by Melissa Bailey at the moment that I'm reading, Beyond the Sea, which is an intriguing book so I'm in the middle of that. I haven't finished it yet but I'm halfway through."
Harry: "Your tipple after a hard day in the office?"
Sir Keir: "Pale Ale"
Harry: "How many people have you slept with?"
Sir Keir: "I'm not going to answer that one."
You can watch Starmer take on the issues that matter right now on and .
In a massive year for the country, Never Mind the Ballots, airing every Thursday at 8pm, will home the biggest political interviews.
Sun editor Harry Cole will take on the biggest faces in Politics today - alongside Sun readers.
Our panel of voters have real-life experience of working in law and order, defence, schools, the NHS and running their own businesses, from a plumbing firm to driving a black cab.
The show will look at what readers really want from the next Government and who, if anyone, can win their vote.
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The programme will also feature The Sun’s award-winning Lobby team for their analysis and insight.
This includes the Sun on Sunday’s Political Editor Kate Ferguson, who will be reading the temperature in Westminster with a weekly look at the Political Weather.