Blake Lively and Ryan Reynolds
Blake Lively and Ryan Reynolds have reportedly welcomed their second child Reuters

Canadian actor Ryan Reynolds and American actress/model Blake Lively are hit by reports that their marriage is in trouble. The Gossip Girl star is upset over the actor's possible reunion with his former wife Scarlett Johansson.

A source told OK! magazine: "Johansson is ready to hop back on the friend-and-colleague track with Reynolds. Blake can be insecure, and she's extra-sensitive right now because she's still losing her baby weight."

"The idea that Ryan and Scarlett might meet up at a party really upsets her. Blake will hit the roof," the insider added.

The couple, who have always stayed tight lipped about their relationship, started dating while filming the Green Lantern in 2011. The two got married in a private ceremony the following year. The Hollywood couple have two children together as well.

During an interview with Variety, the 40-year-old actor praised Lively for supporting him through the difficult period. He said: "Blake helped me through that. I'm lucky to have her around just to keep me sane."

Meanwhile, Lively thanked Reynolds during her speech at the 2017 People's Choice Awards held at the Microsoft Theater on January 18 in Los Angeles. She said: "Thank you to my husband [Ryan Reynolds], who is everything to me. You can't have him! He's mine!"