Originally Posted by skier

That's fine if your reaction is immediately obvious for something you like that your partner is doing. As shanifaye said sometimes a body's reactions can be misinterpreted, even very plain and obvious ones. What if your SO did something you really enjoyed immensely but stopped soon after because he got a signal mixed up and you never mentioned it again because you didn't think it was "sexy"?

I would be a little dissatisfied and left hoping that he/she would do it again sometime (but they never would, because they thought you didn't like it). You can keep communication seductive and sexy- incorporate it into dirty talk, whisper questions to her in her ear asking what she likes better while you do them, play a hot and cold game, and just have fun exploring each other's bodies. Communication makes sex a lot more fun than, say, smiling a little bit extra when someone is kissing your stomach. (How am i supposed to figure that one out, i couldn't even see her face. :/ )

Which brings up something.. the vast majority of girls i've had sex with were extremely quiet in bed, at least at first. There are VERY subtle body language cues they give that they think should be plain as day to read, which they are not. Communication really makes the whole thing more enjoyable.