Sorry, Meg Ryan. If you tend to get a little, uh, theatrical between the sheets like Ryan did in When Harry Met Sally, a Canadian study has proven that your partner probably knows you're faking it if he's attuned to your emotions outside the bedroom. Researchers studied 84 heterosexual couples who were married or cohabitating and measured each participant's views and those they perceived of their partners, including sexual satisfaction, relationship satisfaction, quality of communication about sexual issues within their relationships, and emotion recognition ability. They found that women gauged their partners' sexual satisfaction fairly accurately. Men were fairly accurate in assessing their female partners' satisfaction, but researchers found men sometimes "slightly underestimated" sexual satisfaction.