The rumors about Prince Harry dating Cressida Bonas again have intensified after the royal was seen watching her play at the London Oratory School in Fulham, London on Wednesday.

Cressida Bonas plays Cecily Cardew in the play about Oscar Wilde's "The Importance of Being Earnest," the simple girl who wants nothing more than to write in her diary, tend to her plans and say yes when Earnest arrives to propose to her.

Prince Harry tried to avoid any fuss as he made a low-key entrance at the auditorium to watch his ex-girlfriend Cressida Bonas' performance.

"Harry was clearly there to support Cressy and seemed to want to talk to her afterwards," the insider told The Sun. "He left, then came back inside for a bit, but eventually left alone."

"What does this mean? We can't help but think of Carrie Bradshaw's favourite question - can you be friends with an ex? Perhaps Harry is a big fan of Oscar Wilde or perhaps they are an example to us all that you don't need to 'de-friend' all exes," Grazia Daily editor Emma Spedding wrote.

But Prince Harry had a bigger stake than just supporting Cressida Bonas. The three-night play is trying to raise funds for Action on Addiction, which is being advocated by Princess Kate, Prince Harry's sister-in-law.

"It's not the first time that the exes, who dated for two years before splitting last April, have been linked post-break-up," noted People magazine. "In September, Bonas attended the concert finale of Harry's brainchild, the Invictus Games, and a few days later they went on a cinema date together."

But reports suggest that this seems to be nothing more than a friendly call, even if it trigged Prince Harry and Cressida Bonas dating rumors. On Valentine's Day, the up-and-coming actress was photographed holding hands with her ex, Harry Wentworth-Stanley.