Michelle Williams and Jason Segel get cozy in new photos

Jason Segel, Michelle Williams
Jason Segel, Michelle Williams

(CBS News) Now this would be a cute couple: Michelle Williams and Jason Segel.

Although the romance has not been confirmed, a source told Us Weekly the Hollywood stars are "smitten and very serious."

Pictures: Michelle Williams

Photos taken last weekend show the actors strolling arm-in-arm after going out to dinner in Brooklyn, N.Y., where Williams lives. One shot, posted on UsMagazine.com, finds Segel with his arm around the "My Week with Marilyn" star.

Although the photos may suggest a romance, the longtime pals may have just been sharing a friendly embrace.

To further the speculation, though, Segel was photographed with Williams' 6-year-daughter, Matilda, the next day.

Willliams, 31, and Segel, 32, were also spotted having dinner in Los Angeles in February and again in mid-March.

According to E! News, in early March, Segel asked his Twitter followers "a totally hypothetical question" to find out, "If I fell in love would you guys be happy?" He has since deleted the tweet, but it makes us wonder whether Segel's question wasn't so "hypothetical" after all.

Tell us: What do you think about Segel and Williams as a potential couple?