The Essex reality star, 27, had been engaging in banter with Megan online, tweeting "When your bird thinks she's funny...", when a fellow user commented: "She's a kn*b."
Well, Pete wasn't having that and swooped in to defend his other half.
"Actually pal, she ain't, so why don't you pipe down and keep your irrelevant opinion to yourself?" he replied.
When the user replied to say he thought Pete was a "good guy", Pete responded: "Appreciate that but I'd rather you don't call my bird a kn*b."
Megan and Pete began dating earlier this year, following Megan's stint in the Celebrity Big Brother house. They took their romance public on TOWIE, which Megan joined mid-way through the 17th series.
Since making it official in the series finale, confirming they are boyfriend and girlfriend, the pair have become a regular fixture on each other's social media accounts and frequently compliment each other online.
They recently went on their first holiday together, jetting off to Dubai and, of course, they shared the whole trip on social media for fans!
Megan later returned to Dubai to shoot pictures for her new MissPap.co.uk collection, which went live last night. And, ever the supportive boyfriend, Pete was among the first to retweet Megan's post saying the range was now available to shop. What a guy!