The actor confirmed to People that his character Mike Delfino has parted from Wisteria Lane wife Susan (Teri Hatcher): "Mike and Susan have definitely split up."
The 45-year-old also admitted that Housewives creator Marc Cherry had been reluctant to tell him how his character would feature in season five.
"I'm not sure exactly in what capacity [I'll be back]," he said. "Marc Cherry is being a little cagey. It's going to be interesting to see what happens. But I will certainly be on the show. It's a relief to me, trust me."
New cast additions for Desperate Housewives season five include Chris Carmack and Neal McDonough.