Questions About Adult Dating! Do's and Don'ts of casual sexual encounters and adult dating sites 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 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.