To sleep with your wife without having to flirt very much, after getting a house and a wife, take your wife to your bed and flirt until she asks if you want to go to bed. Say "Yes" and watch or skip the "act". Then, have your wife "Follow" you and just wait by the bed. After about one or two minutes, your wife will ask you again if you want to go to bed. Say "Yes". As long as you stay by the bed, you will not have to flirt and your wife will do all the asking.