You cant do things "again" in life, you cant re-create what was. That only comes once in a lifetime. But only that particular experience does, other experiences will come along and they will matter just as much. If not more...they will just be different experiences. And one day you will look back on them and they will also be a once in a lifetime experience as you move forever forward on to the next. Believe it or not but your life will be filled with "once in a lifetime" moments, that will totaly complete you in the end. Thats the beauty of living...