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The rumor mill is still buzzing for musician LeAnn Rimes, who married actor Eddie Cibrian in 2011; the couple began a relationship in 2009, while both were still married to other people. Cibrian's ex-wife, reality TV-star Brandi Glanville, hasn't been one to move on easily (find out what she is saying now about the affair).
Of course, Rimes and Cibrian aren't the first cheaters to end up with the "other person." Click through to see other high-profile affairs that ended in so-called wedded bliss.