The actor told Soaplife that Andy, who spent time in prison and abused his wife Jo (Roxanne Pallett), was dealing with his issues.
"He’s not a demon," he said. "He has serious trust issues and he just can’t help himself. I really feel for him."
Next week, Andy is dumped by girlfriend Adele (Tanya Vital) when his possessiveness becomes too much for her, which leads him blaming his ex-wife Katie (Sammy Winward) for his problems.
"Because she had an affair with his brother, Robert, and slept with him on the eve of their wedding. He tells her it’s no wonder he’s suspicious after what she did to him," he said.
Asked if getting back together with Katie could help Andy, Fletcher said that he wasn't sure it could happen.
"Them get back together, you mean? They were the perfect couple before her thing with Robert and she knows him better than anyone."
He added: "But maybe too much has happened to go back..."
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