Laich and Hough have shared several friendly interactions on social media since they confirmed to PEOPLE in May that they had separated after three years of marriage.

At the time of their split, a source told PEOPLE that Hough, who revealed last year that she is "not straight," is a "deeply different person than she was when they got married," adding that "she is proud of those differences and changes she's made and she doesn't want to go back. He is the man he is, and he shouldn't change a thing."

Laich and Hough's pool party comes after an insider recently told PEOPLE that he is "definitely still open to getting back together with Julianne."

"If that were an option, he would be all in," the insider said. "Her friends and family love him, and everyone is pulling for him. He's a great guy, and they would love to see Julianne give things another chance."

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