The former League Two footballer enjoyed a successful playing career before becoming a beloved reality TV star after appearing on season three of Love Island in the summer of 2017.
Mike did not enter the villa until partway into the series.
Chris spoke out about Mike's reported death in a statement.
"RIP Muggy Mike", tweeted one fan. Please stop brandishing that.
"His name was Mike Thalassitis, and every inch of my heart goes out to his family & friends. A good guy, taken far, far to soon".
Former Love Island star Tyla Rosie Carr also spoke out about the news. Mike you absolute gent.
We'll bring you more news on this tragic story as he have it.
Our thoughts are with his friends and family at this time.
"Muggy Mike" as he was known on the reality TV show was found dead in the woods near his home in Essex.
Mike, who was just 26, appeared on the 2017 version of the ITV2 dating show. The Only Way Is Essex star Ferne McCann posted: "So so so so sad".