The two Israeli Embassy diplomats who were gunned down by a pro-Palestinian terrorist outside the Capital Jewish Museum on Wednesday night shared a whirlwind romance — and were on the verge of getting engaged.

Yaron Lischinsky, 28, and Sarah Milgrim, 26, were executed in the street as they left the American Jewish Committee’s ACCESS Young Diplomats Reception just after 9 p.m. in Washington, DC.

Milgrim, who spent several summers in Israel working in peace-building groups between Palestinians and Israelis, was about to meet Lischinsky’s family in Israel for the first time before he planned to pop the question during an upcoming trip.

Her heartbroken father, Robert Milgrim, 73, told The Post their family is “complete wrecks” in the wake of the senseless act of violence allegedly perpetrated by an anti-Israel radical.

“We’re going to miss her terribly. She had an infectious smile. She was happier now than she ever was in her life. She was truly in love with Yaron and vice versa,” he said.

“We spent a lot of time with Yaron and we loved him dearly and wanted to welcome him into our family,” he added.

Sarah Milgrim grew up outside Kansas City, while Lischinsky was born in Israel to a Jewish father and Christian mother, according to the New York Times.

He was “devout” practicing Christian, said Ronen Shoval, the dean of the Argaman Institute for Advanced Studies in Jerusalem, where the young man was part of a yearlong program.

“But he had tied his fate to the people of Israel,” Shoval told the Times, with workers at the embassy reportedly saying he identified as Jewish while working there. 

Lischinsky lived in Germany for several years with his family before they moved back to Israel and lived in a small village outside of Jerusalem, Beit Zayit when he was 16, his brother Hanan, 32, told the Times.

Milgrim’s father told The Post on the night of the shooting that his daughter had been attending a panel to figure out how to direct more humanitarian aid into Gaza.

Follow The Post’s coverage on Israeli Embassy staffers killed in DC

“She was trying to help the situation — that’s the irony. The antisemitism is just rampant. It permeates the thought processes of some of these individuals.”

Lischinsky had planned to propose to Milgrim during a trip next week in Jerusalem, and he had just purchased a ring this week, Israel’s Ambassador to the US Yechiel Leiter revealed.

Lischinsky moved to the US in September 2022 to work in the political department of the Israeli Embassy in DC.

His goal growing up was to be an Israeli diplomat with professor Nissim Otmazgin, one of his teachers at the Hebrew University of Jerusalem, telling the Times, “He saw that as his calling.”

“He was an idealist,” the instructor added. “He wanted to build bridges between Israel and other countries, especially in Asia.”

According to his LinkedIn, he had a master’s degree in government, diplomacy and strategy from Reichman University, and a bachelor’s from Hebrew University in international relations and Asian affairs.

On his profile, he expressed his fervent hopes to forge a more peaceful future between Israelis and their Middle East neighbors.

“I’m an ardent believer in the vision that was outlined in the Abraham Accords and believe that expanding the circle of peace with our Arab neighbors and pursuing regional cooperation is in the best interest of the State of Israel and the Middle East as a whole. To this end, I advocate for interfaith dialogue and intercultural understanding,” he wrote.

Milgrim had a master’s in international studies from American University, and a second MA in natural resources and sustainable development from the United Nations University of Peace.

“My passion lies at the intersection of peacebuilding, religious engagement, and environmental work,” Milgram wrote on her LinkedIn page. “While working with Tech2Peace in Tel Aviv, Israel, I conducted comprehensive research on peacebuilding theory, emphasizing grassroots initiatives in the Israeli-Palestinian region.”

The couple both worked out of the Israeli Embassy in DC, and their friendship blossomed into romance — which was cut tragically short.

The suspected gunman, Elias Rodriguez, fired off nearly two-dozen rounds and even kept shooting while the couple was on the ground, according to court documents.

Milgrim attempted to crawl away from the gunfire after she collapsed to the ground.

“The ironic part is that we were worried for our daughter’s safety in Israel,” Milgrim additionally told The Times. 

“But she was murdered three days before going.”

The Israeli Embassy shared a tribute to the couple on X soon after the slayings: “Yaron and Sarah were our friends and colleagues,” it wrote.

“This evening, a terrorist shot and killed them as they exited an event at the Capital Jewish Museum in DC. The entire embassy staff is heartbroken and devastated by their murder. No words can express the depth of our grief and horror at this devastating loss. Our hearts are with their families, and the embassy will be by their side during this terrible time.”

Rodriguez is facing first-degree murder charges and related counts for the hate-filled shooting.