Prince Harry Reportedly Spotted With Former Flame Cressida Bonas

— -- On-again, off-again love Cressida Bonas appears to have rekindled her relationship with Prince Harry.

Bonas, 25, was reportedly a guest at an intimate 30th birthday party held Wednesday night for Prince Harry at Clarence House.

"They’ve decided they want to give it a second-go," ABC News' royal contributor Victoria Murphy said of the pair, who split in April after nearly two years together.

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Prince Harry and Bonas were also spotted attending a movie together in Kensington a few days ago, according to the U.K.'s The Sun.

The Sun reports the pair attended the new Cameron Diaz movie “Sex Tape.” After the movie, Harry jumped into a car with his protection officer and Cressida got into a separate cab but both headed in the direction of Kensington Palace, the Sun reports.

Bonas also made a surprise visit Sunday to attend the closing concert of Prince Harry's Invictus Games in London. She reportedly cut short a family wedding to make it back in time for the event, which she attended with Harry’s cousin, Princess Eugenie, who first introduced the pair.

When Bonas and Prince Harry took a break in April after a two-year relationship, it was the intense media interest that was said to have overwhelmed Bonas. The blond beauty, a trained dancer, was said to have wanted to focus on her career as a dancer and actress

As news of Bonas and Harry’s possibly rekindled romance broke, camera lenses were focused on Bonas when she made an appearance at a club opening in London on Wednesday, the same day as Prince Harry’s birthday party. The U.K.’s Daily Mail featured several shots of Bonas dressed casually in shorts and sneakers at the event.

Prior to their split, Bonas was Harry's first serious relationship since breaking up with long-term love Chelsy Davy in 2011 after a nearly seven year on-again, off-again relationship.

Prince Harry has made no secret he would like to have children but finding a girlfriend who can deal with cameras following him everywhere has been challenging.

At Wednesday night's birthday party, Prince Harry celebrated with a small group of close friends at Clarence House. The prince and his guests, all dressed in fancy attire, had the run of Clarence House while Harry's father, Prince Charles, is away on summer holiday at his Birkhall residence in Scotland.

"Harry of course has learned from his mistakes in the past few years," Murphy said. "He knows that if he’s going to celebrate, if he’s going to have a drink, if he’s going to have a big party, that he doesn’t want to be doing that in a public place."

Singer Ellie Goulding, who headlined at Harry's Invictus Games' concert and did a special set at Prince William and Kate's wedding, reportedly entertained the guests with her soulful voice.