(1) Get used to talking about sex frankly and openly, and not using euphamisms like "intimacy". The idea that men are turned on by nervous virgins is largely a misconception. Besides, you'll need to be able to talk about birth control, so you have to figure out how to talk about sex.
(2) Enjoy yourself! The biggest turn on for most men is a woman who likes to have sex. If your guy is turned on by a woman who DOESN'T like to have sex, then you're with the wrong guy!
(3) Don't fake orgasms. That's dishonest and furthermore it'll ensure that you never get to have any real ones. Men pay attention during sex, and if you seem to be enjoying something, that's what they'll do again and again. In other words, if you fake it once, you can count on having to do it all the time.
(4) After you've done it a few times and gotten comfortable, tell him you have a surprise for him and to come over to your place ready for action. Then, dress and make yourself up like a total slut. Do the whole nine yards - red lipstick, teased hair, fishnet stockings, open-nipple bra, everything. There's a reason why these kinds of looks are considered slutty - it's because they turn guys on! The idea that you're doing it just for him will make him feel like a god. (You'll probably want to make it clear that this is NOT going to be something you'll do often - unless you find that you really enjoy it too, in which case go ahead.)
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