Nicki Minaj allegedly cheated on her rumored boyfriend Safaree in July by having an affair with actor Zac Efron following his rehab stint, an insider reportedly told Star. 

Minaj "shared a steamy night" with the former Disney star last summer, the source said, also telling the magazine that the rapper claimed Efron was "the best lover she's ever had." She reportedly took the actor to her house in West Hollywood and the affair took place there.

Minaj responded to claims on Twitter Thursday. The High School singer quipped to her "Barbz" fans, "Who exactly is Zac Efron tho? I'm sorry, I'm so confused."

When a follower tweeted a picture of Efron to Minaj, she confessed she found him attractive.

"Oooohhhh ok... Well I guess that rumor isn't so bad after all. Lmfao," she joked.

Minaj's alleged Hollywood hookup comes on the heels of her recent admission that after she records three more albums, she wants to focus on an acting career. She told Marie Claire in her August 2013 cover story that she foresees her future focusing exclusively on acting.

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"I at least want to do three more albums. If I can do that, I'll feel complete. One day, when I start getting a couple gray hairs, maybe it will all be only acting," she said. "I just never know. I've kind of become the poster child for doing the things that no one expects." 

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Enstars reported in September that Efron was in a rehabilitation facility for drug use. TMZ later reported the High School Musical star was in rehab not once, but twice this year for a "serious cocaine addiction."