Gaga looked totally smitten as she posed next to Chicago Fire star Taylor while simply captioning the snap with a pink heart symbol. Aww!
Wearing a fringe and dramatic eye make-up, the 'Bad Romance' singer is seen leaning into Taylor's shoulder, while both gaze in different directions.
Gaga told fans over the weekend that she had reunited with Taylor in Chicago. Posting a photo of herself sporting deep red lipstick and wearing a white bodysuit, Gaga said: "My boyfriend's back and it's gonna be trouble! Heyla heyla #Chicago."
The couple, who have been dating for three years, like to keep their relationship private, and the last time Gaga shared a photo of herself with Taylor was during her 28th birthday celebrations in March.
Today (15 July), actually marks Taylor's 33rd birthday, so we wonder what Gaga has got for her beau?!
Last week, Gaga sparked wedding rumours after she was spotted looking at bridal gowns in a couture wedding store with her mother in Toronto.
Despite rumours going into overdrive, it turns out Gaga was just stocking up on some vintage clothes and accessories, later telling fans: "I just had the greatest shopping experience of all time".
Opening up about their romance earlier this year, Gaga told Sirius XM's Morning Mash Up radio show: "He's totally in charge. I mean, when I am home, I am like, shoes are off, I'm making him dinner. He has a job, too, and he is really busy."
Gaga, who is currently on her 'artRave: The ARTPOP Ball' tour, continued: "I'm in charge all day long, the last thing I want to do is tell him what to do ... It's not good for relationships to tell men what to do."
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Watch Gaga's music video for 'Applause' below: