Three is perfectly good company on the latest episode of HGTV’s “House Hunters.”

The long-running home improvement show featured its first-ever “throuple,” or a relationship with three partners. In Wednesday’s episode, the happy Colorado Springs throuple — Brian, Lori and Geli — sought the perfect home to cement their harmonious union.

Naturally, an unusual relationship calls for an unusual dwelling. The trio sought to find the perfect abode for their brood: Brian, Lori, their two children, plus Geli, whom they met at a bar and fell in love with about four years ago. Through the three didn’t get married, they had a ceremony to solidify their commitment.

“I understood from day one, even when we were dating, that Lori was bisexual, and interested in women and men. And so, we evolved to a point where we were comfortable having another woman in our lives,” Brian told the cameras in the episode.

Buying a home together was the next big step in their relationship, Geli said.

“The past four years, I’ve been living in Lori and Brian’s house, so buying a house together, as a throuple, will signify, like, our next big step as a family of five rather than all four of them plus me,” Geli said.

Viewers had mixed reactions to the episode. Some were positively smitten with Brian, Lori and Geli, and praised HGTV for their inclusion of the unorthodox relationship. Either that or they simply wanted to know more about the living situation.

But others voiced their disapproval, saying the relationship wasn’t appropriate for all cable viewers.

Polyamory has lately been enjoying some mainstream acceptance. It’s estimated that up to 5% of Americans enjoy a relationship that involves more than two people, and 20% have at least attempted some form of ethical non-monogamy.

“As younger generations gradually become less interested in the promises of monogamy, the more I think we will see relationships like ours happen and flourish,” one-third of a happy California throuple, Hannah Paasch, told The Post recently.

“We define love a little differently,” her partner, a father of two, added.

However, throuples like them aren’t exactly embraced by all: Former California Rep. Katie Hill was in a throuple with her now-estranged husband and a younger female staffer. Hill, 32, resigned from her post last year after it was alleged that she also had a solo affair with her current legislative director.