<human>: In October last year my best friend suddenly passed away from an unexpected cause. I was out of the country when it happened and she literaly went from fine to hospital in a few hours, and passed away later that night. It's taken its toll on me: the funeral broke my heart and I was in bits for weeks afterwards. 

I've never met someone who I connected that quickly, and that well with before. We had a bit of a relationship going, and if she was alive today we'd probably be a couple by now. 

Since the funeral I felt I've been getting over it, yet in recent weeks it's getting worse and worse. I'm losing sleep over it, especially over my last words to her:

* Me - You sure you don't want me to come visit? I've got to head to the airport tomorrow but I can come down to the hospital for a few hours

* Her - No it's fine, you'll see me soon enough anyway.

Those words are beginning to haunt me a bit, and stress from work and other relationships aren't helping. Does anyone have any advice as to how I can avoid falling into a depression or how to deal with the grief?

Can you give me the gist of the text in a nutshell?
<bot>: I thought I had come to terms with losing my best friend but emotions are coming back and I need to get them under control.