(LOS ANGELES) -- Michelle Williams and Jason Segel have parted ways, sources tell Us Weekly.

The Oz the Great and Powerful actress and The Muppets star reached the end of the road with their romance earlier this month.

The pair was photographed together in January on vacation in Cancun but insiders say the relationship couldn’t survive the long distances involved.  Williams lives with her daughter Matilda in New York, while Segel has filming commitments in Los Angeles, where he shoots How I Met Your Mother.

Though the stars rarely acknowledged their relationship in public, a source told Us Weekly last summer they were "totally in love," and added, "Jason is obsessed with Michelle.”

Copyright 2013 ABC News Radio