Late night host Jimmy Kimmel and comic Sarah Silverman have called it quits again, a source tells Usmagazine.com.

The couple, who have been dating on-and-off for the last few months, started dating six years ago.

“Sarah initiated the split this time,” the source tells Us. “He’s bummed.”

This breakup happened within the last two weeks.

“He’s really blue — very down,” another source tells Us. “Seems like it’s over for good this time. He’s sad because he just bought a new place and now has nobody to share it with.”

The couple, who first split in July, reunited last fall.

“We’re just being right now,” Silverman told Us in November.

The pair met during a roast for Hugh Hefner, where Silverman told the audience he was fat and joked he had no charisma — but that didn’t stop them from working together.

“He hired me to do voices on [Comedy Central's] Crank Yankers and around the second season of that we started hanging out,” Silverman has said. “A while after that he kissed me.”

Kimmel separated from his wife Gina in 2002 after 14 years of marriage. Silverman has said she wouldn’t consider getting married until gay marriage is legalized.

Source