Sinead O'Connor and Husband: Back On?

Sinead O'Connor is redefining the "on-again, off-again" relationship.

Lindsay Silberman

Jan. 4, 2012 at 8:45 a.m. PT

Sinead O'Connor is redefining the "on-again, off-again" relationship.

Sinead O'Connor marries boyfriend in Las Vegas

O'Connor tweeted

Sinead O'Connor and husband split -- after 16 days