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Sandra Bullock kept her adorable son Louis close, as they took a walk outside of a friend's house in Hollywood Monday.

The A-list mom has been spotted spending her summer vacation time with The Proposal co-star and rumored BF Ryan Reynolds. The Green Lantern actor was even photographed carrying baby Louis while on a hike with Sandy in Wyoming!

Reynolds, who's divorce from Scarlett Johansson was finalized in July, has also been caught frequently riding his motorcycle over to the Oscar winner's Hollywood home lately.

Will this hot Hollywood pair ever confess they're an item?