In her latest magazine column, Amy questioned why Bobby had bought up his past relationship with Harry Derbidge - who is Amy's cousin - in a conversation with Gemma Collins on the ITVBe reality show.
In the series finale, Bobby admitted he was angry at Gemma for not telling him that Harry had been cheating on him when they were together.
But airing her thoughts on the episode, Amy said in her New! column that she didn't know why Harry, who left TOWIE for the second time last year, got brought into conversation again.
After seeing a tweet about Amy's comments on Tuesday (28 July), Bobby replied by tweeting a sleeping face emoji.
A few hours later, Bobby then tweeted a photo, which read: "If you don't like me and still watch what I do… B**ch, you're a fan."
This isn't the first time that Bobby and Amy have clashed. In May, former TOWIE star Amy called Bobby "annoying" and said she "cringes" when watching him. Bobby hit out in a cryptic tweet saying: "TOWIE don't want you back (despite you trying)", telling the star in question to stop "gossiping" about him.
Bobby also clashed with Amy in October 2014 after she made a dig about what certain celebrities do for publicity.
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