i think it will hurt no matter what, take it day by day and don't get stuck thinking about her over and over, whenever you caught yourself thinking of her change your mind to something else, get distracted, go out, do something you really like, etc. etc. i've never been in your situation but that is what i would consider doing... =/
I'd say everything I have always wanted to say and never did, what do you have to lose?? I don't think I could watch that happen--I'd probably put it all in a letter!! But then again I'm very emotional!