Prince Harry proposed to Meghan Markle during a cosy night in over a roast chicken.
In their first joint television interview, the happy couple revealed how Harry got down on one knee to pop the question and how Markle could not wait to say "yes".
Harry said the proposal came a few weeks ago while they were at his home, Nottingham Cottage at Kensington Palace.
"It happened a few weeks ago, earlier this month, here at our cottage; just a standard typical night for us," the prince said on Monday evening.
Markle added: "Just a cosy night, it was - what we were doing just roasting chicken and having ..."
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Harry said he was "roasting a chicken, trying to roast a chicken".
Markle described it as "just an amazing surprise. It was so sweet and natural and very romantic. He got on one knee."
She added: "As a matter of fact I could barely let you finish proposing, I said - can I say yes now?"
The pair are to marry in a church wedding in the British spring next year.
Harry and Markle, whose engagement was announced by the Prince of Wales on Monday, gave the interview to the BBC's Mishal Husain.
Harry revealed how they had "hugs" after the proposal and he handed over the ring.
Prince Harry said: "She didn't even let me finish, she said 'can I say yes, can I say yes' and then were was hugs and I had the ring in my finger and I was like 'can I - can I give you the ring?' She goes - 'oh yes the ring'.
"So no it was - it was a really nice moment, it was just the two of us and I think managed to catch - catch her by surprise as well."
They talked about their 16-month relationship and how they never went more than two weeks without seeing one another.
Markle said: "I don't think that I would call it a whirlwind in terms of our relationship, obviously there have been layers attached to how public it has become after we had a good five, six months almost with just privacy, which was amazing.
"But no, I think we were able to really have so much time just to connect and we never went longer than two weeks without seeing each other, even though we were obviously doing a long distance relationship. So it's - we made it work."
