Kanye West Continues to 'Incite Hatred' Says Taylor Swift Source, While West Source Calls the Singer a 'Liar'

"Since 2009, when Kanye West stormed the stage and ripped the microphone out of Taylor's hand, he has been trying to rewrite history," says a source close to the singer

Photo: Axelle/Bauer-Griffin/FilmMagic; Dominique Charriau/WireImage

For the past seven years, Taylor Swift and Kanye West have had a roller coaster of a relationship.

While the pair appeared to bury the hatchet last year when Swift presented West with a prestigious award at the MTV Video Music Awards, a source close to Swift tells PEOPLE exclusively West has continuously taken shots at the singer throughout her career.

“Since 2009, when Kanye West stormed the stage and ripped the microphone out of Taylor’s hand, he has been trying to rewrite history; one that includes President Obama calling him a jackass because of his actions,” says the Swift source.

“For seven years, Kanye has continued to attack Taylor, attempting to incite hatred for her at his live shows and on social media, even going so far as portraying her naked in his most recent music video. His obsession with and harassment of Taylor over the last seven years is unhealthy and if he were not a celebrity, he would be considered a stalker.”

After West released his song “Famous” – which includes controversial lyrics about Swift – in February, the pair’s feud was reignited. Swift denied the rapper’s claims that she had approved of the lyrics and suggested the line, “I made that bitch famous.”

“Once again, Taylor Swift is playing the victim. Shocking!” a source close to West tells PEOPLE exclusively. “Funny, she didn’t think he was harassing her when she thanked him for being so thoughtful and considerate when he called to get her permission for ‘Famous,’ or for the kind gesture of sending her flowers after she presented him with the MTV Video Vanguard Award. As the recordings reveal, she is a liar and nothing she says will change the truth.”

Shortly after West released the song, he addressed the controversial lyrics in a series of tweets, claiming Swift was in on the song. “3rd thing I called Taylor and had a hour long convo with her about the line and she thought it was funny and gave her blessings. 4th Bitch is an endearing term in hip hop like the word N—-,” he wrote on Twitter. “5th thing I’m not even gone take credit for the idea it’s actually something Taylor came up with…”

However, Swift has maintained she never heard the song before it was released and that the rapper never told her about the particular lyric, “I made that bitch famous.” After West’s wife Kim Kardashian West leaked video of the phone call – which shows the singer signing off on the lyric “I feel like me and Taylor might still have sex” – late Sunday night, the “Shake It Off” singer slammed the couple on her Instagram account.

“Where is the video of Kanye telling me he was going to call me ‘that bitch’ in his song? It doesn’t exist because it never happened. You don’t get to control someone’s emotional response to being called ‘that bitch’ in front of the entire world,” she wrote. “Being falsely painted as a liar when I was never given the full story or played any part of the song is character assassination.”

•With reporting by JANINE RUBENSTEIN