All is fair in love, war, and politics. Just when we thought things couldn’t get nastier between GOP candidates, an anti-Trump group decided to stir the pot causing another online battle between Donald Trump and Ted Cruz.  On Tuesday, the GOP front-runner took to Twitter to express his rage about an ad that was published featuring his wife, Melania Trump, posing nude.

“Lyin’ Ted Cruz just used a picture of Melania from a ‘GQ’ shoot in his ad. Be careful, Lyin’ Ted or I will spill the beans on your wife!,” Trump tweeted. Cruz immediately responded to his comment and didn’t necessarily try to clear the air, “Pic of your wife not from us. Donald, if you try to attack Heidi, you’re more of a coward than I thought. #classless,” read Cruz’ tweet.

Trump then decided to go after his next target, Hillary Clinton, “Incompetent Hillary, despite the horrible attack in Brussels today, wants borders to be weak and open-and let the Muslims flow in. No way!,” he said about Mrs. Clinton’s immigration policy.

The real estate mogul has been very active on social media throughout his campaign, specifically on Twitter, where he tends to go to insult every woman, minority, rival, or you know, anyone who comes his way. He has also previously used the website to threaten the Ricketts family, which has financed a negative ad campaign against him.

Senator Cruz has opted not to give any further comments on Trump’s allegations for the moment.