How long will this take!?!:,((?

Yesterday, my boyfriend/bestfriend, moved halfway across the country..he's a junior, I'm a sophomore. I don't love love him but I do love him more than anybody. We're so close and we would hangout every single day. The next time I'll see him is in about 5 months:( MAYBE next month but that's highly unlikely..we keep in touch but it's not the same as being with him. I've know he was going to move for awhile now so I think I started the grieving process before he left. I used to cry all night everytime I thought about him leaving. Now, I barely cry..but I'm still upset and it hurts a lot. How long do you think this grieving is going to take? How long is it going to last? So upset:(