Pippa Middleton and her boyfriend Nico Jackson are getting serious, and reports say that the couple may be getting engaged soon, sometime after Kate Middleton's baby news dies down. Will Kate Middleton have a new brother-in-law this year?

According to the IBTimes, Pippa told the Middleton family that Jackson is "the one," and that she is happier than ever.

A couple of weeks ago, Pippa, 29, and Nico, 35, were spotted PDAing at the Wimbledon Tennis Championship, holding hands and kissing between sets and looking a lot more interested in each other than Djokovic and del Potro's game, The Latinos Post reports. They have also been seen playing tennis together and hanging out through the streets of London.

Though the couple only started dating this year, it seems like Pippa is ready to settle down with her boyfriend. Jackson, a stockbroker, is equally as happy with Middleton.

"An engagement is definitely in the cards," said a source. "The last time Nico spoke about Pippa to his friends back home in Folkestone [England], he was totally buzzing about her. He is in his element right now. He has never been happier and this is really what he wants."

Jackson's mother, Ulrike Jackson, confirmed the seriousness of the couple in the Daily Mail's February edition, saying how happy Pippa and Nico are together. "We're very pleased. They're happy and that is all that matters," she said. "As long as my children are happy, then I am happy."

According to ABC News, last month Pippa became a contributing editor for Vanity Fair and wrote her first column about Wimbledon and her wedding plans as a child, which now seem like extremely relevant topics given the success of her relationship with Jackson.

"If I had to get married, it would be in my tennis whites - shorts with no pleats or frills," Middleton wrote of her childhood wedding plans. She admitted she was quite a tomboy as a child.

But it doesn't look like anything will happen for the next few months, as the world turns to Pippa's sister as they wait anxiously for the birth of the royal baby, the heir to the British throne. Kate Middleton is reportedly a couple days past her due date already.