Don Trump Jr. and Bettina Anderson Are Getting Serious and Could 'Go the Distance' (Exclusive Source)

Donald Trump Jr. and his girlfriend, Bettina Anderson, are starting to get more serious, according to an insider.

"They're certainly going strong," the insider tells PEOPLE of the duo, who appeared at the Jan. 20 inauguration together. "I could easily see them going the distance."

"Bettina seems great for him," the insider continues. "She's truly beloved in Palm Beach and is just a nice girl. Everybody likes her."

Related: Donald Trump Jr. Brings New Girlfriend Bettina Anderson to Mar-a-Lago for New Year's Eve Celebration

A separate Palm Beach source tells PEOPLE that Anderson, 38, who grew up in the area and attended Columbia University in New York City, devotes much of her time to raising money and awareness for causes like mental health, conservation and child literacy.

"She's a third-generation Palm Beach native with long ties to the philanthropic community," the source says.

Related: Kim Guilfoyle 'Kept a Watchful Eye' on Don Trump Jr. and His New Girlfriend Bettina Anderson at Inauguration (Exclusive)

Anderson's parents, Harry Loy Anderson Jr. and former model Inger Anderson, were also well-known as a philanthropic couple, with her father serving as a board member on the Historical Society of Palm Beach County and the National Board of Governors for the American Red Cross.

Anderson herself is an advocate for Audrey Gruss' mental health foundation, Hope for Depression Research Foundation, which funds medical research related to depression, and she's a driving force behind Project Paradise, a Florida conservation effort. She also spends time with the Literacy Coalition of Palm Beach County "every week," the Palm Beach source says.

Related: Don Trump Jr. Feels Bettina Anderson 'Would Impress' Dad After Allegedly Griping About Kim Guilfoyle's Style (Exclusive)

Trump, 47, was previously engaged to former Fox News host Kimberly Guilfoyle — and while he never officially announced their split, PEOPLE learned in December that he and Anderson had been dating for about six months.

Soon after Trump and Anderson were spotted holding hands in public, Trump's father nominated Guilfoyle to serve as the U.S. ambassador to Greece, which will require her to leave the country.

Related: Kimberly Guilfoyle and Donald Trump Jr.'s Breakup Is 'Not a Contentious Thing' and His 'Family Is Still Enamored with Her' (Exclusive)

Before dating Guilfoyle, Trump was in a 13-year marriage to Vanessa Trump, with whom he shares five children. He and Vanessa divorced in 2018.

Trump's ex-fiancée and ex-wife both attended some of the same inaugural events as Anderson in January, though no drama occurred, according to a source who was present.

“Kim saw Don with Bettina and it was all civil. No negativity," the inauguration source previously told PEOPLE. "She should be ambassador to Greece soon which is important to the administration, and she will be away a lot of the time."

“Kim is still very fond of Don, and kept a watchful eye out," that source added. "She knows how beautiful and well dressed Bettina is, and there is no question that she was hurt when her romance with Don ended."

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Now speaking about how Trump's new relationship with Anderson has been received by those in their orbit, PEOPLE's Palm Beach source says, "People are happy for them."

"They are surprisingly low-key and don't clamor for the spotlight," the source adds. "They just get along well."

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