Rome?!

Kevin came up to me again today with one of his girl problems, i listen but I don't want to hear them because I like him. Then after that, he told me that tonight was the night that his dad decided to turn down or accept his job in Rome. If his dad accepts then he would leave in two months. I'm happy for him and his family, I really am, but I don't want him to go. What hurt me the most was when he said he could have a whole new life in Rome, then he could forget about everything that he knew here. I was about to cry, I don't want him to forget about everything, I want him to remember me.
What does someone do when the person they care about most is moving to a country half-way around the world? How do you tell them you love them without making them feel like you are saying it because they are leaving? (Kevin is one of the best friends I have, I can talk to him about anything. And now he wants to forget about everything if he moves?!) How do you make them understand without them thinking you are putting them on a guilt trip? Am I being selfish for not wanting him to leave? Maybe I am, maybe I'm afraid of losing someone I can talk to about anything and tell all my problems to. I don't know what I would do without him, I'm sure I would be just fine after a few weeks. But what happens within those few weeks? What do you do when all you want to do is cry? Should one resort to the habits of cutting? Should one try to keep in contact with the individual that they lost? What happens if he forgets about everything so soon and doesn't remember who I am?
I have to tell him what I am feeling about him wanting a new life without any memories from his friends here, I just want to find the right time, and I don't know when that is. Maybe there is right time to say it, maybe I should just say it and not feel bad about it the next day. I shouldn't feel like he feels like I did it because he was leaving.
I will figure it out when the time comes, until then I will keep it to myself and no one will know but me.