Nicollette Sheridan and Michael Bolton’s on again, off-again love affair is off again.  They have broken off their engagement after two years….

More pics after the skip…

….for the second time.  E! Online says the pair dated in the early 90s, beginning in 1992 and lasting until 1997.   They broke up an engagement than and didn’t start dating again until 2005, when Nicollette broke up with yet another fiance!  It seems Nicollette can get engaged, but never married.  Is there a diva problem at play here?