The sweet duo made the official announcement of their betrothal by sharing a snap of the then 21-year-old princess beaming as she showed off the elegant engagement ring given to her by her future husband, who was 26 at the time.
It’s fair to say the couple was destined for greatness following their glorious wedding ceremony at Westminster Abbey on November 20, 1947.
It's clear that the prince’s utter devotion to his wife has been a backbone in their incredible partnership.
"My job first, second, and last is never to let the Queen down," he has sweetly said.
In light of Prince Philip's retirement from royal duties after 70 years by the Queen's side, we've rounded up 11 times this pair has shown us that although time has flown by, their love for each other hasn't.
1. The way they look at each other warms our souls.
Even after decades of marriage, Prince Philip has but one Queen. On November 20, 2016, the royal couple (lovingly) celebrated their 69th wedding anniversary.
2. They share a love of the funnier things in life.
Laughing their way through life has made for a wonderful marriage. Her Majesty's prince had her in giggles during a royal event.
3. They always keep calm and carry on.
The pair were as merry as can be during Queen Elizabeth's 90th birthday celebrations last year.
4. They’re each other’s confidants.
Always by her side, Prince Philip is the Queen's number-one confidant. Pictured here at the 70th anniversary of Victory over Japan day in London last year, the pair shared many sweet moments. We especially love when the reigning monarch gave her husband a "knowing" look.
5. They are tolerant of each other (his words, not ours).
“You can take it from me, the Queen has the quality of tolerance in abundance," the 95-year-old Duke has said.
6. They have barely been apart in almost 70 years.
When Philip first met Elizabeth he recalled: "You were so shy. I couldn't get a word out of you."
7. They are as dedicated to their children as they are each other.
Prince Philip watched his wife fondly as she presented the world her darling boy, Prince Andrew, for his first appearance on Buckingham Palace's balcony at Trooping the Color in 1961.
8. They enjoy each other’s company, inside the palace and out.
Dancing their way into wedded bliss. Philip spins his love on the dance floor. The stylish duo looks straight out of a movie!
9. They make the picture-perfect pair at any royal engagement.
For the charismatic prince, in a crowded room, he only has eyes for his wife.
10. They continue to stand as a united front.
"The secret to a happy marriage is to have different interests," Prince Philip has said.
11. They not only serve their people, but they serve each other.
Indeed, their withstanding relationship is based on their mutual love and respect but also a shared sense of humor—after all, Prince Philip is notoriously funny! In fact, the Duke of Edinburgh "traipses around" and jokes that he is the "fella who belongs to Mrs. Queen," rather than being "professionally qualified in something."
On the other hand, the mother-of-four is very comfortable around her husband, with her former private secretary, Lord Charteris, once admitting, "It is not unknown for the Queen to tell the Duke to shut up."
This post was written by Chloe Lal. For more, check out our sister site Now To Love.