GOP presidential front-runner Donald Trump has a love/hate relationship with the media, particularly Fox News.

The day after the first debate, Trump picked a fight with Fox News host and debate co-moderator Megyn Kelly over what he viewed as unfair questions. Quickly after that dust-up, a ceasefire was declared.

Then, a week later after Kelly returned from vacation, Trump attacked Kelly again.

Since then, however, Trump has kept his powder dry when it comes to Fox News.

Until now.

After what Donald Trump saw as a slight by Fox News host Bill O’Reilly, he took to his Twitter account to hit back. (RELATED: Bill O’Reilly Says Trump ‘Has Been Good For Politics In America’)

.@oreillyfactor was very negative to me in refusing to to post the great polls that came out today including NBC. @FoxNews not good for me! — Donald J. Trump (@realDonaldTrump) September 22, 2015

.@oreillyfactor, why don’t you have some knowledgeable talking heads on your show for a change instead of the same old Trump haters. Boring! — Donald J. Trump (@realDonaldTrump) September 22, 2015

After his unprovoked tweets, Trump began retweeting his fans attacking Fox and O’Reilly.

“@bewhatjesuswas: @oreillyfactor @FoxNews You dominate not because of them-but despite them;They need you more than you need them” — Donald J. Trump (@realDonaldTrump) September 22, 2015

“@coolgirl6978: @oreillyfactor @FoxNews this is bull fox. O’Reilly, I expect better from you. What is going on? Fair and balanced my ass” — Donald J. Trump (@realDonaldTrump) September 22, 2015

“@blewthebigone: @realDonaldTrump Can’t even think what the race would be without you in it.” — Donald J. Trump (@realDonaldTrump) September 22, 2015

“@diannrr: @megynkelly Do you dream about @realDonaldTrump? He’s in your head. Let it go.” She is the worst – all anti-Trump! Terrible show. — Donald J. Trump (@realDonaldTrump) September 22, 2015

I am having a really hard time watching @FoxNews. — Donald J. Trump (@realDonaldTrump) September 22, 2015

.@RichLowry is truly one of the dumbest of the talking heads – he doesn’t have a clue! — Donald J. Trump (@realDonaldTrump) September 22, 2015

“@TheMindWave: @FoxNews Im not sure why u r giving them this much importance, they had wanted to take u down in debate and they failed!!” — Donald J. Trump (@realDonaldTrump) September 22, 2015

“@seleti00: @realDonaldTrump @FoxNews They attack you more then CNN or MSNBC combined. Just a bunch of old Bush appointee Rhinos.” — Donald J. Trump (@realDonaldTrump) September 22, 2015

Trump didn’t have a problem with every Fox News host. One, so far, has escaped his wrath.

“@JodiL792: @FoxNews I have been since you started running & I noticed Meghan Kelly’s attacks. Stopped watching. Only Hannity 4 sure.” Yes! — Donald J. Trump (@realDonaldTrump) September 22, 2015

“@wallen_jeanine: @realDonaldTrump I can only watch Hannity. I think he is the only one in your corner”

— Donald J. Trump (@realDonaldTrump) September 22, 2015

Hannity aside, Trump retweeted a call for a Fox News boycott.