<human>: I have a crush on my friend. I recently found out that she likes someone else and today, I saw her on a date said person. I decided I need to back away and try to get over her. I'm going to cut all contact with her and I already deleted her contact information and made new plans for the weekend. 

 
Unfortunately, I am going to see her one last time. It can't be avoided. Here's my dilemma: a part of me wants to just tell her how I feel and why I won't be in contact with her for a while. It will lift a heavy burden off my shoulders, give me some closure and I feel I owe her an explanation as to why I won't be seeing her for awhile, especially since she is a member of my group of friends. However, I also realize that nothing can really be gained from this and it's a bit passive-aggressive. 

Should I cut and run or at least try to give an explanation? If I do tell her, should I do it in person, leave a note, or have a mutual friend explain it?

Give me the gist of the text in a nutshell
<bot>: Have an unrequited crush on a friend. Going to cut contact to get over her. Debating whether of tell her how I feel before I do.