LeAnn Rimes's ex-husband Dean Sheremet spoke out this week about what it was like to learn LeAnn was cheating on him. And as it turns out, LeAnn isn't appreciating his comments.

Dean tells Access Hollywood that he was completely shocked when LeAnn dropped a hint to him over the phone that there was something going on between her and Real Housewives of Beverly Hills star Brandi Glanville's then-husband Eddie Cibrian.

"I never saw it coming," Dean says, adding that LeAnn informed him that a magazine "may or may not have a picture of me and Eddie kissing." Dean  who got remarried in 2011  also says, "You have that assumption that the person that you’re with would never do something like that."

Now, LeAnn is firing back on Twitter. On October 11, she tweeted, "I've got nothing! Over it, long gone, next... I mean really!? TGIF." Okay, so she doesn't mention Dean's name there, but it seems pretty clear she's directing that at him. 

Things got worse when LeAnn started responding to tweets from her followers. One person wrote, "Can't believe they interviewed him after all this time - as he put it, 'whatever gets me in the door," to which LeAnn replied, "Sorry, but that statement...." Sounds like LeAnn is in agreement.

When another follower wrote, "I always say, 'Jealousy is misdirected admiration,'" LeAnn responded with, "For sure!!!!"

LeAnn also added, "Today's song of the day 'True Colors' @cyndilauper." Again, nothing particularly subtle there. 

It's too bad that LeAnn and Dean aren't on better terms, but we wish them both the best moving forward.

Source: LeAnn's Twitter