Here are some do's and don'ts to help you make sure you're having a good time, staying safe and being a good fuck buddy:
DON'T: Don't text her at all hours of the evening. Just because she is having casual sex with you doesn't mean you should be bugging her all the time. She might be married...
DO: Always use a condom and make sure to get tested for STD's regularly. Also, look out for cold sores and don't have casual sex with women who look like they may have had a lot of unprotected sex.
DON'T: Don't stay too long. You're there for casual sex and not a relationship. Remember, she might have just fucked you, but her husband or boyfriend could be coming home any minute.
DON'T: Don't cuddle after sex. Remember you are trying to keep this a no string attached night. You're there for sex, and once you are done you should not be giving her the wrong impression.
DO: Keep repeating to yourself before, during and after sex, that this is just about sex and not love. That good feeling you are getting while she is riding you or giving you a blowjob is not love...
DO: Experiment and keep things wild. You're not there to make love, you're there for crazy sex, so make it crazy. Ask her if you can tie her to the bed, or ask her if you can cum on her face. Chances are she is meeting you for local casual sex because she wants to try new things too!
DON'T: Don't be mean to your casual sex partner. Remember, this could be the first time she has ever had sex with a random local stranger too. She could be nervous, and you probably are too. The goal is to have fun and have sex and to go home laid, not to go home angry.