The “Party in the U.S.A” singer was snapped frolicking in a pool in Miami, Fla., with a mystery man — and Hemsworth, 22, was nowhere in sight.
However, Celebuzz can exclusively reveal the identity of the man who has raised so many eyebrows.
Never fear: the guy getting too close to Cyrus is her BFF Cheyne Thomas!
Want to know more about Cheyne and Miley’s reaction to cheating rumors?
Cyrus has taken to Twitter to slam critics who accused her of already cheating on her fiancé Hemsworth.
While Celebuzz told you first the mystery man in a Miami, FL pool was Cyrus’ best friend Thomas, other media outlets claimed the “Party in the U.S.A” singer was cheating.
Cyrus was quick to defend herself and express her love for her new fiancé.
“I love my fiancé & he loves me. All the rest is bull s**t. We get to live a life of happiness no one can take that away from us!” Cyrus tweeted to her mom.
Confessing to being homesick and missing Hemsworth, Cyrus branded those who believed she was cheating “dumb”.
so now because I am engaged I can’t have a friend of the opposite sex? can’t have a friend help me out while I’m working alllll day? #dumb
— Miley Ray Cyrus (@MileyCyrus) June 14, 2012
So who is Cheyne?
“Cheyne is Miley’s constant companion,” a source told Celebuzz. “They are always together, shopping around her home in Studio City, Calif., or hitting the exclusive club Beacher’s Madhouse inside the Roosevelt Hotel in Hollywood.”
Despite concerns that 19-year-old Cyrus was already stepping out on Hemsworth, the singer is obviously still over the moon with her engagement — with the giant sparkler holding pride of place on her wedding finger the whole time she swam around with Thomas. Cyrus isn’t the only one obviously expressing her joy about her upcoming nuptials.
Hemsworth’s ex Laura Griffin – who dated The Hunger Games star for six years until he met Cyrus on the set of The Last Song – revealed exclusively to Celebuzz that she was shocked but happy for her former love. “Hearing your high school sweetheart — who is the same age as you — is getting married, is a shock,” Griffin, 22, who lives in Melbourne, Australia, told Celebuzz. “Of course it hurts seeing someone I spent so many years with moving on, especially when I learned from the media. “But at the same time if they are in love and are happy, why not? I’m very happy for him.” Check out other young Hollywood marriages below.