Nadine Leopold split from Harry Styles because she wanted "more commitment".
The 'Victoria's Secret' model and the One Direction singer have reportedly gone their separate ways, with a pal revealing that she dumped him because she felt he wasn't making enough "effort" with their relationship.
A source shared: "Nadine wanted a more serious commitment from Harry.
"She felt like he needed to make more of an effort to see her. She just didn't feel like he was taking their relationship seriously enough, and basically she doesn't have time for any games in her life."
The news should please the 21-year-old singer's ex-girlfriend, Taylor Swift, as she is believed to be keen on rekindling their romance.
Another source added to HollywoodLife.com: "Taylor is secretly so happy that they broke up.
"She still has feelings for Harry and the fact that Nadine broke up with him kind of gives her pleasure. Now he knows how it feels. She never thought Harry and Nadine were right for each other anyway."
Meanwhile, the 'Steal My Girl' hitmaker is said to be "gutted" Nadine split with him as the pair were planning to spend time together in the summer whilst the band are on the North American leg of their world tour.
An insider said previously: "Harry is gutted. He's never been dumped before, so it's a real punch in the stomach for him.
"Even though they can't spend much time together Harry was speaking to her a lot and making plans to fly her over to spend the summer with him."
Tagged in Taylor Swift One Direction Harry Styles