I forgoten manga HELLLLLPPPPp????!!!! plzzzzz!!!?

I read a manga at borders like a few years ago =.=" so then yea plzzz help. It's about a guy who's a detective and has s*x with his wife it's a smut manga :) srry it's not a lot of info but then yea....if u think it's anything similar then plzz tell me. It's most definitally smut. Plz and thx.