( CNN ) -- The latest celebrity Twitter feud erupted Sunday between two heavyweights of the social medium . In one corner : pop superstar Lady Gaga and her nearly 40 million followers . In the other : pop culture blogger Perez Hilton and his 6.1 million Twitter fans . Who won the war of 140 characters ? It depends on whom you ask . The feud between the former friends appears to stem from several incidents : Hilton tweeted Thursday that Katy Perry 's new single , `` Roar , '' is better than Gaga 's latest song , `` Applause . '' On Friday , Gaga , who is in the midst of a comeback following a serious tear to her right hip , cryptically referenced a text from Hilton that appeared to make light of her injury . `` Still have the text Perez sent me of me in a wheelchair with the words KARMA written across + Madonna pointing a gun at me , '' she tweeted . But Gaga went into Twitter overdrive Sunday , accusing Hilton of stalking her , after one of her followers alerted her that he was at Gaga 's apartment building in New York . `` STAY AWAY FROM ME + MY FAMILY YOU ARE SICK TRYING TO RENT AN APARTMENT IN MY BUILDING TO STALK ME . LEAVE ME ALONE ! ! ! '' she tweeted . Hilton , who lives in Los Angeles , announced last week that he is moving to New York as he raises his new son , born via a surrogate in February . He responded to Gaga 's tweets with a post on his blog Sunday night , titled `` A Statement On Lady GaGa 's Lies . '' In the statement , he explains he was house-hunting and later learned one of the buildings he looked at was , in fact , Gaga 's building . `` After a day of innocent house-hunting , I am devastated and my heart hurts that my former very good friend , a person I used to call my 'wifey ' and traveled the world with , is making very public and very untrue allegations about me on Twitter , '' he wrote , adding `` it is still too painful '' to reveal what caused the end of their friendship . He said that as a result of Gaga 's series of tweets Sunday , her fans have sent him death threats and posted derogatory comments about his 6-month-old son . `` If her fans want to send a message of support to Lady GaGa , they should buy her music , '' he wrote , a thinly veiled reference to Gaga 's new single being declared a flop by several media outlets . And while Gaga vowed `` I 've been quiet for a long time , not this time , '' Hilton appeared to be getting the last word . `` The truth will all eventually come out . It usually does ! '' he wrote .
Lady Gaga accuses the blogger of stalking her after he house-hunts at her NYC building . Hilton says he learned later that her building was among those he looked at Sunday . The former friends have not said why they had a falling out .