Mike, shot to fame in 2017 on the smash-hit ITV2 reality show. His most successful spell during his sporting career came during the 2012/13 season, when he scored seven goals in 19 appearances for Boreham Wood.
Thalassitis was born in Edmonton in London and played football for clubs including St Albans and Chelmsford.
"All at the club wish to express our deepest sympathies to all the family and friends of Michael, which include many of our past and current playing and management staff". "An absolute hero and a legend and someone I looked up to since I met him, always full of so much positivity and charisma". "A good guy, taken far, far too soon", Hughes said.
Our thoughts go out to Thalassitis' family and loved ones during this hard time.
"Mike wasn't the lad you saw on Love Island".
Fellow islander Chris Hughes demanded on Twitter that people not refer to Thalassitis as "Muggy Mike".
The actress Sheridan Smith tweeted that Thalassitis's death should be a "wake up call". Please stop brandishing that. I won't forget that... it's so so sad... you will be missed.
- Olivia Bowen Buckland (@OliviaDBuck) March 16, 2019His name wasn't Muggy Mike.
"Everyone at ITV2 and Love Island are shocked and saddened by this bad news", a spokesperson for ITV said, "Our thoughts and deepest condolences are with Mike's family and friends at this very sad time".
"Mike... you were a total gentleman..."
He had previously been in a relationship with country singer Megan McKenna, who was a star in The Only Way Is Essex.
Margate FC shared a photo of him in action with the statement, 'Margate FC is deeply saddened to learn of the passing of one of our former players, Mike Thalassitis.