What should i do about my friend?

So- I became best friends with a girl who i really care about, but now shes leaving to Brazil and i'm really broken about it. Me, her and this other girl who i am uber close too, became a little group. And i didn't alienate but all my other friendships eventually didn't work but us three always stayed very good friends, next year i only have 'the other girl' and don't get me wrong she's incredible. But we have 2 weeks left of school should i stop being SOOO close to this girl who's leaving since its only going to hurt more or should i have the best few weeks?