I got engaged last fall and at first my best friend seemed happy for me. We have known each other for 19 years. She is single and that seems to be an issue now. During bridesmaid dress shopping, several girls complained about her attitude and I was upset also. She scowled and complained the entire time and on the way home said it was a "horrible" day. When I confronted her, she said she was sorry, she is depressed with everything going on and when I asked her what is going on she said she didn't know. One weekend I received text after text about how depressed she is. When I ask her what is wrong, she says she doesn't know but she has told mutual friends she is depressed because she is single. If I talk about my relationship at all, she has been making snide comments and it is awkward. We have always been able to talk about anything before. Now, with my wedding a few months away, I don't know who she is anymore. Any advise or tips on how to handle this?