At least one person who probably WON’T be sending RYAN REYNOLDS and  new bride BLAKE LIVELY a wed­ding gift – ex-wife, SCARLETT JOHANSSON!

Sources tell The ENQUIRER the “Lost in Translation” beauty has been on the warpath since Blake, 25, and Ryan, 35, tied the knot last month because she’s convinced the two hooked up while she and Ryan were still married.

“Even though there is no evi­dence behind it, Scarlett has convinced herself that Ryan cheated on her with Blake,” a close source told The ENQUIRER. “She’s incredibly bitter about it.

“In a way, Scarlett feels like Blake actually stole Ryan from her, because it was when he started shooting ‘Green Lantern’ with Blake in 2010 that everything fell apart.”

Insiders say Scarlett is so an­gry about the marriage that she

 can’t even stand to look at pictures of the “Gossip Girl” beauty. “Scarlett thinks that Blake is a total phony and a complete fame monster,” continued the source. “Scarlett also considers Blake to be a cheap version of herself. They’ve actually auditioned for the same roles a few times and Blake has always lost out.”

Scarlett, 27 – now dating wealthy businessman Nate Naylor – recently ad­mitted she sank into a deep depression following the collapse of her nearly three-year marriage to Ryan. The cou­ple wed in 2008, and their divorce was finalized in July 2011.

“Ryan and Blake’s wedding has brought back a lot of pain for Scar­lett,” revealed another source. “She’s sure that Blake deliberately seduced Ryan, even though she knew he was attached at the time.

“On top of that, she feels like it’s a huge slap in the face that Ryan would remarry this fast.

“Scarlett is happy and dating, but she assumed he would wait a few years before he tied the knot again.”