In a photo posted to Instagram, Chicago Fire star Taylor can be seen with one arm wrapped around Gaga's neck while leaning against her head.
Well and truly capturing the moment, the 33-year-old actor can be seen laughing with his eyes closed in the cute snap. Meanwhile, 'Bad Romance' singer Gaga is also photographed chuckling away with her eyes closed.
Captioning the photo, Gaga said: "He's singing 'I Got Friends in Low Places'. At the Garth Brooks show with my country boy. So much fun we're screaming!"
The photo was an instant hit with fans who couldn't stop gushing over the couple. One fan said: "You guys are so adorable together!"
Another commented: "OMG you two are actually so cute. WHY ARE YOU NOT MARRIED?????"
Well in fact, in July, Gaga denied rumours that she was getting hitched to Taylor after she was spotted shopping in a couture wedding store with her mother in Toronto.
The couple have been dating for three years and sightings of Gaga looking at gowns sparked speculation that she was secretly engaged. It turns out Gaga was just stocking up on some vintage clothes and accessories, but she was forced to publicly address the rumours on Twitter.
"I resent that I have to be getting married to wear bridal," she said at the time. "I mean what if I just love wearing white lace and pearls without it being creepy? TILL DEATH DO US BRIDAL."
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Watch Gaga's video for 'Applause' below: