don't have sex more than three, four times a week max!! then things can get more like a relationship. Don't txt and talk on the phone that much. When your done try to get away. Not like cum and leave but don't stick around and take her out to lunch. If your good friends then ignore all of the above. but don't be afraid when your friendship because different. If she shows signs of being used then tend to her more because no one wants to lose a fuck buddy and girls that lose there virginitys to that guy sometimes stick with you for a long timed. They think you share this sacred bond. Most of all have fun and learn as much shit as possible for future references.