shaken to the core

Quick version: I've just found current contact information for the only woman I've ever fallen in love with. She doesn't know this -- I was too shy to tell her when I first realized it, and later, it turned out that our lifes diverged at a point where it seemed that we were essentially incompatible. (Yes, I know I'm being vague -- it's hard to find the exact words without giving too much away. The end result was that I could have said, "I love you," but there wasn't room in her life the way she was shaping it for me.)

Anyway. . . I am here, looking at a printout with her address, email address, and phone number, and wondering if I dare write her an email. And if I do, what shall I say?