The mop-topped crooner and the Austrian model first met through CAA agent Jeff Azoff and the two began dating this past November. The publication is reporting that the duo aren't "exclusive" yet but have been spending a lot of time together.
"Harry is having a good time being a young rock star," a source told Us. "You will know he has a girlfriend when he steps out on the red carpet with one. Until then, he's having fun and enjoying life."
Unfortunately for starry-eyed 1D fans, if the past week is any indication of their budding relationship, things are looking good for them to become an official couple. The 20-year-old singer planned a number of birthday activities for the model's 21st birthday, which was on Tuesday.
According to Hollywood Life, some of the fun-filled birthday events included a romantic lunch at Cafe Habana in Malibu, a sunset stroll on the beach, a dinner at Nobu in Malibu, as well as another birthday dinner at Craig's in West Hollywood, Calif., where Styles showed up with a plethora of pink balloons.
The One Direction superstar has been linked to a bevy of beauties in the past, including Kendall Jenner, Cara Delevingne and of course -- Taylor Swift.