How long does a rebound last for ?

Once you realize that you will probably never "get over" her but at the same time understand that's ok... you'll be able to move on. We never really get over someone we love. With time the pain eases, but it doesn't mean those feelings go away completely (love is truly forever). What you need to do now is focus on the present and on the future. You WILL fall in love again someday. Until then think of this time in your life as a new journey. Do things you've never done before (travel, learn to dance, paint, play a sport, volunteer, join a club, moonlight, write a novel or a song, become a boxing coach...). Staying busy and being productive will help your heart heal. All these things will lead you to becoming a more independent, productive, and stronger young man. And once you feel healthy and happy again, you'll probably decide you actually enjoy being all on your own. That's likely when love will smack you upside the head (pow!), and there is nothing better in this world than falling in love. So hang in there, trust your instincts, and know that you're going to be ok.