R&B Singer Rockwell -- Somebody's Watching Me ... Divorce My Wife

R&B singer Rockwell's marriage lasted longer than his music career, but now that's over too -- the "Somebody's Watching Me" singer has filed for divorce from his wife of almost 3 years.

49-year-old Rockwell -- son of Motown founder Berry Gordy -- is divorcing Nicole Moore, citing irreconcilable differences. According to docs the couple married in July 2010.

The couple has no children together, and Rockwell is asking to NOT pay spousal support.

FYI (to people under 30): Rockwell -- real name Kennedy Gordy -- is a quintessential 80s one hit wonder thanks to "Somebody's Watching Me" ... which featured Michael Jackson.

At least he got to work with MJ.