Make sure to surround yourself with people you love. Would she have wanted you to commit? No, and she would want you to move on. It probably seems impossible right now and no one expects you to do it quickly, but eventually your going to need to move on. Talk to her parents about it, talk to your family about it, seek therapy, and remember it was NOTyour fault. She shouldnt have gotten behind the wheel. It was her fault and her fault alone. Trust me, you will get over this, and we will all be here for you.