<human>: I had a friend (NC) for over 10 years, and in the last 5 years we became really close. The last year or so of the friendship became tumultuous. The last straw occurred about 3 years ago and I completely cut off contact for very good reasons. I've not seen NC since then.

I will be attending a tribute party for a friend who died recently. NC was a mutual friend of ours, and I recently found out NC will be there. There will be about 50 people at the party, but given NC's personality, I know that NC will want to talk to me, possibly even attempt to rekindle our friendship. I am not at all even interested in talking to NC. How would you handle this? Any advice is welcome.

Can you provide a brief overview of the text?
<bot>: An old friend who I am completely uninterested in socializing with will be at a social gathering I am attending. What to do?