Obviously you don't mean as much to him as he means to you. A man who loved you and wanted you for a LIFEmate wouldn't send you on your way to experience life with other men.
Sorry, doll but this guy is just using the "you need to experience life" as an easy excuse to end things.
Good for you for not contacting him at all. Now you just have to accept that he's not going to come running back to you all upset that he's made a terrible mistake. If you need something to read that might help you through your grieving for him, the book The Five Stages of Grief might come in handy for you.
He is controlling by the way, telling you what you should be doing, not considering what you want to do and breaking up with you so you can do what he says you should. pffft. You'll get over him in time and you'll find a guy that wouldn't let you get away and in fact he'd want to show you the world together.
Sorry you're hurting.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion