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Singer Mariah Carey arrives at the 2015 Billboard Music Awards in Las Vegas, May 17, 2015. REUTERS/L.E. Baskow

Mariah Carey wins the best of both worlds. The “We Belong Together” singer gushed over romantic relationship with billionaire boyfriend James Packer and enthusiastically announced her first-ever concert in Israel.

In her “#1 to Infinity" Las Vegas show at Caesar's Palace on Wednesday, Carey dedicated her ‘90s hit song, “Hero,” TMZ reported. She gave a sweet shoutout to her Australian boyfriend and said: “I got a new heart tonight. James is in the house. Thank you for my heart. I dedicate this next song to you,” Carey also dedicated her song to the fans who stood with her along the way.

The 45-year-old singer also brought some good news to her Israeli fans, according to E! Online.

"They are incredibly happy, and it was a very romantic moment for the two of them. Her children are also there, and you can tell by the way he was looking at her that this relationship is meaningful and that their relationship is going to the next level," the source continued.

Mariah Carey was labeled as a “songbird supreme” by the people at Guinness World Records. Her beau, on the other hand, ranks fourth in the Forbes Australia’s 50 Richest People.