You say, "no." If you've been asked nicely, you say, "No, thank you." It's YOUR body.
Sex is YOUR choice. No one EVER has the right to force you, or pressure you into sex.
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The above is correct and completely appropriate, but it doesn't cover all possibilities. While it is not clear from the question, there is a possibility that the questioner is dealing with habitual or compulive sexual activity. There are support groups that help many deal with such difficulties. One is Sexaholics Anonymous, structured along the lines of standard 12-step programs like AA. There is also Sex and Love Addicts Anonymous. With a little searching you can find these groups and learn if they will be helpful to you.
sex sex sex
Avoid sleeping together.
You must be very lucky, if you can't avoid sex.
avoid having sex without protection...
you don't you just have it
The way to avoid early discharge during sex is to slow down a little. Try to think of something that is not sexy so that the sex will last a little longer.
The surest way to avoid AIDS is to abstain from sex, or to limit sex to one partner who also limits his or her sex in the same way (monogamy). Condoms are not 100% safe.
slow and steady sex increase volume and avoid frequent sex
Kiss
not having sex!
Penis is fun to have sex with
With BCP women can avoid pregnancy by stop having sex... If you stop The Pill and continue having sex, you will most likely get pregnant