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 Just as Scarlett Johansson says that her marriage to actor Ryan Reynolds was “the best thing I ever did,” reports say that she is “pissed” Reynolds has moved on to “Gossip Girl” actress Blake Lively. 
 
 Page Six sources say that Lively and Reynolds are looking for an apartment together. And a source tells Us Weekly that Johansson is not happy that Reynolds’ relationship with Lively, his co-star in “Green Lantern,” appears to be progressing so quickly. 
 
 BLAKE AND RYAN PLAY HOUSE 
 
 “Scarlett is pissed that he’s not under her spell anymore,” the source squeals. “Ryan would have gotten back with her. He was so totally in love, but then she flaunted Sean right after their split, and he was done.” 
 
 The fact that Johansson and Reynolds were still married while he filmed “Green Lantern” with Lively in New Orleans probably doesn’t help. The film wrapped in August 2010, while Johansson and Reynolds didn’t announce their split until December of the same year. Their divorce was finalized last July. 
 
 Johansson certainly sounds wistful about her defunct marriage in the new issue of Cosmopolitan, calling it “the best thing I ever did.” 
 
 “I’m a big believer that when something feels right, you should do it,” the blonde bombshell shares. “I’m a big believer in instinct. Getting married was the right thing to do because it was natural. It grew out of a romance and love and a desire to have a future with somebody and I was very fortunate that I married somebody who turned out to be the person I thought he would be.” 
 
 But she also shares what went wrong. 
 
 “Relationships are complicated and being married is a living, breathing process,” she says. “I think I was not fully aware of the peaks and valleys. I wasn’t prepared to hunker down and do the work … Both of us were extremely busy. We spent so much time apart.” 
 
 The actress, who is rumored to be casually dating Joseph Gordon-Levitt, puts a happy face on life after Reynolds. 
 
 “I’ve never been single for a chunk of time before,” she says. “You miss having a partner and a confidant, but I have to say, I’m appreciating having the time to get to know myself.” ||||| Exclusive: Ryan Reynolds Told Pals Scarlett "Treated Him Badly" 
 
 Ryan Reynolds didn't feel like such a superhero when the cameras weren't rolling on the set of Green Lantern, which was shot last spring. 
 
 PHOTOS: Scarlett and Ryan, the way they were 
 
 An insider on the comic book flick tells the new Us Weekly that its hunky star, 34, was "open on set that he and Scarlett [Johansson] were having problems." 
 
 Just a year and half into his marriage with 26-year-old Johansson, Reynolds "would say that she treated him badly," the insider explains. "It never seemed like she made him a priority." 
 
 PHOTOS: The year's most shocking splits 
 
 After UsMagazine.com broke the news Dec. 14, the couple confirmed their split in a public statement -- and Reynolds is now "beyond sad and depressed," another pal says. 
 
 Iron Man 2 actress Johansson, meanwhile, is less broken up about the situation. "She was disconnected and disaffected" about the split, the source says. "It was harsh." 
 
 PHOTOS: Scarlett's twin brother! 
 
 For much more on what led to the split and how Reynolds and Johansson are coping, pick up the new Us Weekly, on stands Tuesday.
– The surprise announcement that Scarlett Johansson and Ryan Reynolds are ending their marriage may be linked to sparks between Reynolds and saucy Gossip Girl Blake Lively on the set of their recent movie. "Everything wasn’t exactly up to wedding vow snuff" with 34-year-old Ry and Lively "canoodling" during filming of the Green Lantern earlier this year in Louisiana, reports E! Online. It was Johansson, 26, who reportedly pulled the plug on her 2-year marriage. Lively, 23, has apparently already moved on to another Ryan—Ryan Gosling, 30, who could barely come up for air at the Manhattan premiere this week of his new movie Blue Valentine. Click for more background on the split.