Transcript for New details about Prince Harry and Meghan Markle's romance
We move on to the royal engagement. When I was in London last week Meghan was already making her mark. People around the world falling for her and now we are learning more about just how her love story with prince Harry happened for these two very busy and very public people. This morning, we're learning more about how the palace's newest royal couple kept their relationship under cover for so long. Keeping Harry and Meghan's relationship under wraps was a cloak and dagger operation. Of course, Meghan had a job on "Suits" so couldn't fly around as much as Harry did so when he had the time he would jump on a plane, fly into Toronto. In a huge city where there's nowhere to go on a restaurant date and so it was up to the friends of Meghan to actual kind of open up their doors for places that they could actually hang out. Reporter: Even going on double dates in both Toronto and London. The other couple that Harry and Meghan often went on double dates with is his favorite cousin princess Eugenie and her partner jack brooksbank. Reporter: Part of that cloak and dagger operation quiet 24/7 protection early on. Now that they're engaged he'll also receive further training. She'll know how to deal with a kidnapped threat or if someone is following her. Reporter: Transitioning to royal life in the public eye but it's a transition that has been in the making for some time. Now that I fell in love with Meghan so incredibly quickly was sort of confirmation to me that everything -- all the stars were Ali aligned. Everything was just perfect. It was this beautiful woman sort of literally tripped and fell into my life. I fell into her life. Reporter: Prince Harry actually picking out the center diamond from Botswana. It was something he had actually planned several months before proposing to Meghan. It was a trip to Botswana in may of this year where he selected the diamond and kept that as a secret from pretty much everyone around him. Botswana is somewhere very important to prince Harry. It was the place that he escaped to after the death of his mother. It was very early on in the relationship that he actually convinced her to come away to Botswana with him where they spent close to a week camping under the stars. Reporter: That ring glimmering with significance in more ways than one. The ring is obviously yolo gold because that's her favorite and the main story in itself a source from bat swan in and the little indictments on either side are from my mother's jewelry collection to make sure she's with us on this crazy journey together. Speaking of princess Diana it was significant that Meghan's first royal public appearance after getting engaged was with the Terrance Higgins trust which aims to raise HIV and AIDS awareness, something, of course very close to Harry's heart and something that princess Diana was extremely passionate about, as well.
This transcript has been automatically generated and may not be 100% accurate.