Denise Richards and Charlie Sheen
KATHY HUTCHINS /HUTCHINS Photo
Charlie Sheen has answered his estranged wife Denise Richards's divorce filing of last month with a legal filing of his own, entered earlier this week in Los Angeles, according TV's Extra.
In his documents, Sheen reportedly contests Richards's claim for spousal support, saying it should "not payable to either party" and asks that the court terminate such a request.
He also reportedly seeks joint custody of their 1-year-old daughter Sam and their unborn child, expected in June.
Richards, 34, and Sheen, 39, married in 2002. She filed her divorce papers this past March 2.
Initially, sources told PEOPLE, Richards filed as a wake-up call to Sheen, who, she believes, had rediscovered some of his old bad habits. Sheen denied any relapse.
It has yet to be revealed what drove them apart. Sheen, who completed rehab for alcohol and drug abuse in 1998, has denied any bad behavior or infidelity.
Two sources close to Richards said her concern about Sheen's alleged gambling played a part in the rift. But Sheen's rep Stan Rosenfield said: "He does not have a gambling problem." Rosenfield calls such claims "innuendo, and he's an easier target because of his past."
Instead, a Sheen pal told PEOPLE, the couple had simply grown apart. "They like to do different things," says the friend. "Charlie is more of a stay-at-home guy, and she likes to go out more and be more social."