(Cover) - EN Showbiz - Ryan Reynolds' new romance with Blake Lively has reportedly left Sandra Bullock feeling "crushed".

There is speculation Green Lantern co-stars Ryan and Blake are dating after they were seen enjoying a weekend in Boston together recently.

This has put an end to rumours of romance between Ryan and Sandra, 47. It was claimed The Proposal co-stars were serious about each other and even considering moving in together.

Although Sandra's representative has insisted the actress is just friends with Ryan, 34, insiders are claiming she is upset to see him with Blake.

"Sandra is crushed," a source told the US edition of OK! magazine. "She's doing her absolute best to hold her head high and act as if she's not bothered, but the truth is, she's very hurt."

Blake, 24, and Ryan have been spotted kissing in several locations in Boston in recent weeks. The hunk is in the US city to film new crime thriller R.I.P.D.

It has been reported Sandra had hoped her friendship with Ryan would blossom into love, particularly after they spent so much time together in recent months.

However, it appears Ryan has now fallen for another Hollywood beauty.

"For a while things between [Ryan and Sandra] were going so well, and she really got her hopes up," the source added. "That's why she surprised Ryan by going to the premiere of his movie, The Change-Up. And then last month they had an incredibly intimate trip to her place in Wyoming. But then all of a sudden, Ryan went cold on her." (C) Cover Media