No, you haven't crossed a line. You're allowed to tell her your feelings. I'm pretty sure if you had a choice you wouldn't have those feelings to begin with, it sounds painful.

I'm sure she's heard similar things before (I realize that you may not want to hear that.) I bet she just hasn't had a chance to respond yet. She won't hate you. If she's like my T, she'll be happy that she better understands you. At least that's what he tells me after my weirdo emails.