Brooks Nader played coy when asked about Page Six’s exclusive report that she dated US Open finalists Carlos Alcaraz and Jannik Sinner at the same time this summer.

“I would just say, a lady never kisses and tells, especially twice,” the Sports Illustrated Swimsuit model responded on “Watch What Happens Live with Andy Cohen” Wednesday, seemingly confirming the flings.

She then added, “That’s just not nice,” before her sister Grace Ann Nader — who was in the audience — chimed in, “Especially not to her other boyfriend.”

Brooks’ younger sister had been the one to recently spill the beans that the “Love Thy Nader” star was seeing Alcaraz. Grace Ann, 25, said at a New York Fashion Week event, “The rumors are true.”

The candid confession came after Brooks and her sisters confirmed to

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