Once a cheater, always a cheater?

That seems to be the case for Teen Mom 2 star Jeremy Calvert. In a series of now-deleted Instagram posts, he argued back and forth with his ex-fiancée Brooke Wehr after she accused him of cheating on her with producer Mandi Venturino — who works with Chelsea Houska on the popular MTV reality TV series!

Brooke took to social media to expose Jeremy’s cheating ways. She posted a series of memes and accused Jeremy of hooking up “1,000” other people — including Mandi — but he denied the allegations in his own posts. He said he “didn’t cheat” on her, and he posted a ton of NSFW comments about his ex-fiancé. To take his mind off of their split, the newly single father-of-one spent his Friday night drinking beer with his buddies.

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But this isn’t the first time Jeremy has been accused of cheating. He was accused of cheating on his ex-wifeTeen Mom 2 star Leah Messer — with Brooke while Leah sought treatment in June 2015 at a rehab center.

Jeremy hinted that there was trouble in his relationship with Brooke last month. He posted a quote about letting go of a bad relationship and he wrote, “This speaks so much volume to me.” But he quickly deleted it and replaced the post with a photo of him and Brooke and explained they couple — who has been engaged since last September — has their ups and downs but they always try to work things out, and he blamed the show for causing drama in their lives.

Scroll through the gallery below to see Jeremy and Brooke’s now-deleted Instagram posts!