Ever sent an explanation letter/email to a friend?

I emailed someone that I've known 8 years and who I became closer too over the last two years. As I noticed she started changing and becoming more 'self absorbed' and trying too hard to be fabulous. She was always down to earth and I thought she was confident in her self to not need to be like the girls on instagram.

Anyways I quit all the things we enjoyed drinking and clubbing. Consequently she stopped accepting invites out and kept messing up plans we made together.

I know I was a little down at times as I wasn't happy and my anxiety levels were through the roof consequent of the unsaid things and unusual new aggressive friends she had.

We last spoke on my birthday were she told me she had a new boyfriend which seemed to be her top priority for a while.
She became rather insensitive to me and I couldn't be bothered to pander to her request to do what she wanted.
So I fell off the radar changed my number and just moved on.
And although I have low days a lot of the time I feel more happy.

But I didn't want to leave things unsaid and weird. I just explained I was working on myself and needed to make some healthier changes and life's taking me in a new direction. I wished her and her family well. And left it at that.

End of really.