to care or to not care...

Over the past weekend..i was faced with a lot of difficult decisions mainly with close friendships. My identity was revealed in a not so proffesional manner. I wish I could take it all back and things go back to being normal. To bad life doesn't work that way. Now I have to face my worst nightmare...I lost my best girl friend that I had. We both leaned on eachother when facing everyday obsatacles and it was nice to just vent whenever needed.... Can I mend this relationship? only time will tell. So i have to ask myself whether of not i should still care..or just move on. Not the easiest decision to make when you have poured out everthing to that person. Advice is welcome.