Sandra Bullock has reportedly been spending a lot of time with Ryan Reynolds lately, prompting speculation that they’re romantically involved. But sources tell Popeater that isn’t the case — yet. “They love spending quality time together,” a source says, “But they are not a couple, at least not yet. They are both newly single and leaning on each other for support. Who knows what will happen in the future, but any rumors of them being together and splitting up Ryan’s marriage to Scarlett [Johansson] are false.”

Apparently Lindsay Lohan will have a familiar face for a neighbor at her new Venice Beach apartment, as ex-girlfriend Samantha Ronson reportedly lives next door, according to Us Weekly. Ronson was spotted while Lohan’s belongings were being moved into the new space. “Samantha walked out of the building next door,” a source says. “She was shaking her head and looking disgusted. She kept saying, ‘I didn’t plan it this way.’”

Selena Gomez is learning that being romantically linked to Justin Bieber can be dangerous, according to the Daily Mail. The 18-year-old Disney star was photographed canoodling with the 16-year-old singer on a yacht in the Caribbean over the holidays, and since then she’s been receiving death threats from Bieber’s fans on Twitter. “Roses are red, violets are blue, [Selena Gomez] if you’ll break [Justin Bieber’s] heart I’m gonna kill you,” wrote one fan, while another posted, “If you are the girlfriend of Justin, I will kill you. I hate you.” Neither stars have responded to the posts.

After dating for seven years, Mila Kunis has split from boyfriend Macaulay Culkin, according to Page Six. “The split was amicable, and they remain close friends,” a source close to Kunis says. The low-key pair is said to have broken up some time ago, but they agreed to keep it quiet while Kunis promoted her new film, “Black Swan.”

Justin Bieber says his hectic life is giving him insomnia. “I just turn over all night and think. My mind races,” he tells Vanity Fair. “I think about all the things I didn’t have time to think about during the day — like family and God and things that should be more important but you don’t have time to think about, because you just get caught up during the day.” One thing he’s not losing any sleep over, though, is ruining his successful career. “I know I’m not going to make a life-changing bad decision, as some people have,” he says.

Zsa Zsa Gabor’s doctors are still trying to save the 93-year-old’s leg, her rep tells the Associated Press. Gabor was admitted to the hospital earlier this week to deal with a growing lesion, with amputation considered likely at the time. “The lesion is apparently very deep. They’re afraid it may be into the bone, which would not be good,” her rep says. “Before taking that drastic measure, they want to give it one last chance with some really powerful antibiotics.”