For many years a mixed group of couples and single people were very close. A couple of years ago two of those couples started to act distant.
It coincided with a rather traumatic event in my life which left me quite mentally unwell for months. They knew about the traumatic event, and had said and done a couple of things which had made it worse.
In the immediate aftermath, they did things together which normally we would all have been invited to, which is their prerogative, but they also took to sending me photos of them having a good time, when they knew I was having an awful time and would've loved to have been out with them.
Soon afterwards, they removed themselves from our conversations and one of them blocked us on every platform. I still have absolutely no idea why, or what we did wrong.
I bumped into one of the couples last week at a wedding. I was friendly and joined them for a while. I enjoyed their company, I always did.
Today, they have messaged me and another friend to ask if we'd like to go for a meal next weekend. My friend wants to draw a line under the whole thing and go. I don't want to. I can't seem to forget that at my lowest point they were quite cruel. I know I can say no, and my friend can go and see them alone, but I don't know if I'm being petty.
AIBU to not want to have anything to do with them?