Speaking to Reveal at Binky Felstead's In The Style launch party, Max didn't hold back when it came to discussing his former beau Jess, calling her an "absolute nightmare".
After the pair won Love Island and pocketed the £50,000 prize fund, their relationship in the outside world didn't last long and after just six-weeks they split up for good.
At the time Max assured fans they'd given the relationship their "best shot", however up until now he's played it coy when it came to what happened behind the scenes.
Last night (15 October) Max told Reveal: "She wasn't the same person in the outside world and that's why it didn't work out."
"Jess is vile and nasty. The three weeks after I left the show were the worst of my life. She was possessive and argumentative, just an absolute nightmare."
Max explained he believes the hate he's received on social media since confirming the split and then moving on with Geordie Shore star Charlotte Crosby, is unfair and that the relationship simply didn't work out.
He told us: "I got a lot of hate for breaking up with Jess, but this was the reason. It wasn't because I wanted to get with other girls, it was because we just didn't get on. It's hurtful because I still get hate from it now."
Rumours of a split first surfaced when Jess and Max were photographed arguing in London. However following their heated row, Jess and Max reassured fans that in fact things were ok between them, insisting they were "hopeful" they could work through the rocky patch.
Things didn't go as hoped and just one week later the pair revealed their relationship had officially come to an end. Jess told fans "some things are just not meant to be".
A few days later Max was pictured sharing a kiss with Charlotte Crosby and Jess hit back, saying: "Didn't expect anything less, compulsive liar and fame hungry little boy. Laughable. Only two days ago [he] was telling me he missed me! Desperate."
Despite all the drama, things seem to be going well for Max and Charlotte. Speaking to Reveal last night Max said: "Charlotte is the best girl I've ever met in my life," and although they're not officially a couple, he hinted it's on the horizon, saying: "she's definitely girlfriend material."
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