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The Age of Love star Mark Philippoussis choose "kitten" Amanda Salinas on the reality dating show's finale – but on Monday in Las Vegas the new couple reunited for the first time since the show wrapped in May.

The tennis star and Salinas, 26, an assistant to a financial planner, watched the NBC's show's final episode among a group of pals at the Planet Hollywood Hotel.

"They were both really nervous to see each other but as soon as it happened they were great," a source close to Philippoussis tells PEOPLE. "Mark had a bunch of friends in town from Australia so he introduced her to them."

On the show, Philippoussis was forced to choose between women in the 20s or 40s, who became affectionately known as the "kittens" and the "cougars". (See PEOPLE's video of the "cougars" in bikinis here.)

Prior to revealing the winner, Philippoussis told PEOPLE, "Age doesn't come into play when it comes to relationships... I didn't go on the show to get married, but I found someone who I love hanging out with. I promised myself that if I found someone like that, I wouldn't rush into anything, and that's what I'm going to do."

After the show's finale, Philippoussis and Salinas "had drinks at Heart Bar. After that, they went up to Mark’s suite to party," says the source. "They plan on staying in Vegas for the week together and do couple things."

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