ANOTHER CELEBRITY MARRIAGE ON THE VERGE OF COLLAPSE ..

Kate Beckinsale's husband has been hitting the town like a very single guy over the last month ... a single guy out with a very young model.

 Len Wiseman has been spotted out  without his wedding ring  with  CJ Franco. They were out Tuesday night at The Nice Guy, partied until 2 AM and left together.

It's the third time Len out with CJ, as Kate is ensconced in Prague shooting "Underworld 5."

Kate and Len married in 2004, but it sure seems the marriage has come to a screeching halt.
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Source
TMZ