Give us a moment while we mourn Lily Allen and David Harbour's marriage ... and Realtor also reported that Harbour may still have his New York City apartment he had before marrying Allen.

Singer Lily Allen and David Harbour have reportedly called it quits on their four-year marriage after months of speculation that their relationship was on the rocks. Allen, 39, and Harbour ...

Lily Allen, and David Harbour. Photo by Sean Zanni/WireImage ... and Realtor also reported that Harbour may still have his New York City apartment he had before marrying Allen.