Hi VMJ7675, and

If so, how did you ever get over it?
I got over it by treating it for what it was: abandonment. It was a kind of trauma. You don't just "get over it."
I am one of the few people on these boards whose relationship was a plutonic friendship and not a romantic relationship. But it was the most intense friendship I’ve ever experienced.
I don't think a relationship needs to be romantic in order for it to be intense. For me, my romantic BPD relationship paralleled the kind of painful relationship I had with my mother which is why I was drawn to the relationship in the first place. Unconsciously I tried to work out the pain from my maternal relationship through my romantic relationship. I figuratively almost married my "mother." But at the time I didn't think this was the case at all.
I’ve written all the details on other posts on this site, but we became incredibly close and while I primarily played the caretaker role I must admit I also became codependent.
I'm codependent also. For me, it took this degree of pain and trauma to force me to do something I found as difficult as pulling out my own teeth: taking care of myself. IMO, this is the mantra of the codependent: others and all before self.
Anyway on Jan 1 of this year she completely blocked me without any explanation. And the crazy thing is that on New Year’s Eve (ONE day before I was blocked) she texted me this gif of Champagne glasses toasting and told me how much she was looking forward to the next chapter of our friendship. Then the next day she didn’t reply to any of my attempts to contact her and a few days later I realized it was because she had completely blocked me.
I hate to say this but you might consider that she has always used you for her emotional purposes from the beginning. And this effort to completely cut you off is yet another aspect of her doing what she needs to do for her purposes: she needs to blame you and make you her emotional scapegoat.
I just can’t get my brain around how somebody can be your best friend and the suddenly vanish with absolutely no explanation. It feels like she died yet I know she’s actually alive and well and chose to do this to me. It is so painful.
It is as though someone you depended upon (emotionally or otherwise), someone you trusted and love, just left you for no discernible reason... abandoned you.
Have others experienced ghosting and how did you cope?
I don't call it "ghosting." But use this an a reason to take care of yourself. Consider using the "recovery" model to help you recover. One day at a time. Expect to fall off the wagon. Love yourself. You deserve it. You don't deserve to be put through this again.
Best wishes,
Schwing