He's definitely the one, I can't picture my life without him at all and he is the best thing that happened to me. We had a falling out when he realized that he needs to get his life together and he can't be in a relationship right now and he's happier the way things are going for him with his family, work and school. I realize that I should give him time and then come back and see how he is. But I really can't see how he doesn't love me anymore after what we had. && I definitely want him back. && make him realize that I am the one for him too. Help... how long should I wait? What should I say when I do contact him again?

It seems like the feeling is not mutual so don't assume anything. Give it 3 weeks. If he doesn't respond, move on. Make sure he did contact you on his own and made a very clear indication he wants to be "the one".

This will tell you how.

https://www.askmehelpdesk.com/relationships/how-get-him-her-back-187766.html

You don't wait at all, you live your own life and let him live his, and see what life brings you.

He obviously is not "the one" if he is gone now. There are going to be others who are "the one" and you will not be able to see your life without them. Truth is that life will go on, and you will have a life without him. It hurts now, but the pain eases with time.

Do not dwell on the past and get stuck in the why and how, because you can not change the past. Do not get stuck in the future in the maybes, what ifs, and someday, because you can not manipulate or predict the future. Instead, stay in the moment. The moment is all you have to live for. Be as happy as you can be in the moment that you are in. Accept that moments change in the blink of an eye. When that moment changes, it is the past and don't dwell in it, because it can not be changed.