Well, maybe not your best friend but certainly someone that recognizes your face and knows your name. You cannot expect a counselor to write a glowing recommendation for college when he or she has never met you or can't distinguish you from the hundreds of other students that need recommendations too.
So, if you are a junior and currently do not know your guidance counselor, go introduce yourself. Tell him or her that you will be applying to college. Talk about the process of asking for letters of recommendation from teachers - how to do it and when to do it.
Ask him or her if some teachers are more receptive than others to writing letters and which teachers actually take the time to write student specific letters. Lastly, don't forget to ask the counselor what he or she wants from you before he or she writes your letter of recommendation - such as a resume or an "about me sheet" - anything that will distinguish you from the other students and allow you to start to form a relationship with the counselor.
Senior year is just around the corner and soon you will be in the midst of the application process. Junior year is a time for taking care of important details that can help you avoid uncomfortable and unproductive interactions later on. (Go talk to your counselor now!)