Lady Gaga is happily in love with her new fiancé Taylor Kinney, but it didn’t start that well.

Taylor was allegedly cheating on his girlfriend with Gaga when they started out!

Real estate agent Brittany Sackett was Taylor’s girlfriend and she says they were madly in love when Taylor was hired to feature in Gaga’s music video for “You & I”.

According to Sackett, Taylor ut when he accidentally pocket-dialled her one night and he was hooking up with Gaga, it was all over!

Speaking with the Daily Mail, Sackett revealed: “‘I could tell it was intimate conversation, I could hear kissing, muffled sounds and I recognized Lady Gaga’s voice. You couldn’t tell whether they were having sex but I knew something was going on, it wasn’t right. In that moment I was super sad, I was pi**ed. I never saw it coming. My boyfriend was making out with Lady Gaga – it sucked. I felt betrayed, who wouldn’t?”

Watch where it all started – Lady Gaga & Taylor Kinney in “You & I”:

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