The One Direction star is rumoured to be dating Victoria's Secret model, Nadine Leopold, and she is reportedly getting fed up of the 'Shake It Off' hitmaker always referencing her previous relationship with Harry.
A source said: ''For one thing, it's making his relationship with Nadine more difficult. They feel like wherever they go, they are hearing Taylor's songs on the radio.
''Nadine really wants Taylor to get over him. She wants Harry to herself and doesn't think it's right for Taylor to draw this out anymore. She wants Taylor to go away.''
Nadine is believed to be furious with Taylor after one of the shots in her recently-released music video for her latest single 'Style' shows her clutching the paper plane necklace the 'Steal My Girl' hitmaker had given to her when they were dating in 2012.
However, it doesn't look like Nadine will be happy as Taylor is reportedly not planning to stop any time soon and is still ''obsessed'' with the 21-year-old singer.
Another source told HollywoodLife.com: ''She's still obsessed with him. She never got over him, like she did with John [Mayer] and Jake [Gyllenhaal]. Harry really had a huge impact on her.
''She makes references to him all the time still, but if she's confronted with the question of, 'Why are you still singing about him?' she'll just say, 'It's just a song.' She'll totally downplay it.
''He's so hard to dislike first off. He's not a jerk, he's super charming and she was really in love with him.''