Edward Cullen may have sucked the life out of Bella Swan in Twilight series but in reality Robert Pattinson's heart is very much torn by the heartache caused by Kristen Stewart.
A source close to Pattinson told Us Weekly that the on-again-off-again couple reportedly argued about all the issues that have affected their love life since Stewart's July 2012 fling with director Rupert Sanders, the New York Daily News reported.
The recent disagreement of the pair apparently began when the 27-year-old British actor did not attend a birthday bash organized for him by Stewart.
One of Stewart's friends told Hollywood Life that the 23-year-old actress totally went out of her way to make Rob's birthday super special, but at the last minute, Rob said he didn't want to make his birthday a big deal and said he was just going to hang with the guys.
The source added that the couple argued, "about the cheating, about how selfish she always is and also about how moody she always is.