Donald Trump Jr.'s girlfriend Kimberly Guilfoyle calls them the 'perfect team'

The perfect team?

Donald Trump Jr. and former Fox News personality Kimberly Guilfoyle have been dating since the spring, and things are still going strong between them as the summer draws to a close and the midterms fast approach.

Speaking to Page Six's Richard Johnson at a Hamptons fundraiser for Republican Rep. Lee Zeldin last week, Guilfoyle gushed about her whirlwind romance with the first son.

"I've never been happier," Guilfoyle reportedly said. "I am thrilled to be joining Don Jr. across the country in amplifying the America-first message. We are working non-stop and we make the perfect team."

During the Bridgehampton event, sources say that the couple "arrived like royalty and worked the room together," added that they appeared to be "a real power couple."

And, after Guilfoyle introduced her boyfriend to the stage, Don Jr. called his ladylove "a tough act to follow."

Guilfoyle joined Trump Jr. on the campaign trail after suddenly leaving Fox News back in July amid misconduct allegations.

The unlikely pair was first linked back in May, two months after he split from ex Vanessa Trump. A month later, they were spotted holding hands during a night out in New York City, of which an eye-witness said that "they didn't care who saw."

Later in June, the couple made their rumored romance Instagram official after sharing a slew of airbrushed photos from their weekend fishing trip to Montana. Earlier this month, sources overhead them calling each other by their alleged nicknames for one another: He calls her "Junior Mint," while she refers to her man as "Pooh Bear."