I am suffering with how much I miss my ex.
I totally ruined it. This is a fact. He liked me alot but I was a borderline mess who took things way too seriously and just shoved him out of my life while he was experiencing hardship.

Ugh. I am horrible.

Anyway, it's been since Sept. I want to apologize in a cool and collected manner by writing him a note.

Does anyone have any advice?