I have found the answer to my question.

I hate to be the mean one but open your eyes! He's not interested right now in being best friends. You need to occupy yourself with other things other than him; when he's ready to be your friend and/or get back together, he has your phone number. He'll call you or email you. For now, leave him alone. Don't call or email even if it kills you not to. Give him his space. Learn to be on your own for a little. Believe me, you will benefit from the time apart.

He's a man. men think diffrently then women. He may be just as confused as you. I would say don't call him for a few days. (3 or 4 days) see what happens. You do know that 9 times out of 10 what one person feels the outher feels too. I am in love with my best friend, he is in love with me too. he does the same thing to me. We were together for a short time. He got scaired. he is affraid of relationships. But he still wants to be friends. If I don't call him for 2 day's he calls me. Give it a try.

 Good Luck.

I have to be really honest with you on this one... He is losing interest in you and focusing that interest on someone else. If he truly is only friends with this girl, he is definately looking for more than that with her. It sounds to me like you are so used to how things were between the two of you before that you are failing to see that things have changed. You are his ex, not his girlfriend, his Ex, and he is moving on with his life now. He has found a girl he's interested in and has stopped bothering with you to persue her. Men love when a woman plays hard to get and even messes with their minds a bit. Sounds like this is exactly what this girl is doing. I think you should do what your ex has decided to do and move on..at least for now. You were only good enough to talk to before he had "other" things on his mind. As for him telling you he's busy at work and tired, he just doesn't want to hurt your feelings, those are excuses. As for the two of you getting back together after college to have kids and get married, only time will tell. But from my personal experience, don't count on that happening. If you two are so right for each other you would still be together, right?! Plain and simple, he's making excuses and not being 100% honest with you about the situation. You can't make him answer his phone and go back to how things were. Only he can make that decision and at the moment he is not. Whatever happens between him and this girl is out of your control. Face it, there's not much you can do besides except the fact that your relationship with your ex has changed.