A source told RadarOnline.com that Matthew's isolating behaviour has friends worried he's started drinking once again.
“He doesn’t like to be disturbed and would go into private areas of the hotel where only VIPs are allowed. He’ll order a few strong [drinks],” the insider told the publication.
“Hardly anybody recognizes him because he’s such a mess compared to what people remember. He kept to himself and would hardly leave his room until after dark except for a cigarette or a hospital appointment.”
The source continued: “He was mostly holed up in his room. When I saw him, he seemed out of it and sickly.”
We hope Matthew is just recovering from surgery and its nothing more serious!