Scarlett Johansson 'shares Leo spark'

Scarlett Johansson and Leonardo DiCaprio have reportedly been seeing a lot of each other lately, with "sparks flying".
The two stars are both single at the moment, following Scarlett's split from Nate Naylor and Leonardo's separation from Erin Heatherton. They have known each other for some time, but never spent time together when they were single before. They are apparently growing close at the moment, with claims they could become an official item before too long.
"Last year, Scarlett read for the part of Daisy in The Great Gatsby and met Leo for dinner [the part eventually went to Carey Mulligan]. They had great chemistry but the timing wasn't really right. Scarlett and Leo are bumping into each other a lot in New York and LA and sparks are flying," an insider told Heat magazine.
It's thought the pair have been bonding over their love lives. Scarlett's ex-husband Ryan Reynolds recently wed Blake Lively, who Leonardo used to date.
"Scarlett and Leo have known each other for a while - at least five years. Scarlett's very involved in the Democratic Party and environmental issues, as is Leo," the source added.