I have this phiosophy on life:
Its what ive come to realise over the years. If you get upset,mad, whatever emotion, go have a rant or write it out, talk to someone. That should help you get over it.
Then just get over it. Your too young to dwel on things.
If what you have lost(on purpose or not)does not come back then its not worth your time
Live life as it is.