How can I handle my ex at my autistic social group with dignity?

After we fell out, he insisted that he’s still coming to the autistic social group that I introduced him to.

i want very much to show everyone how mature and sensible I am if he turns up, including him, regardless of how awkward I might feel, being around him. He treated me with disrespect, upset me, he wouldn’t commit and lied about wanting to. I want to handle it very sensibly but I am autistic and this is a new situation for me to be in.

it is very important to me that I act with dignity and grace; and seem like it doesn’t bother me, being around him, although it might. I also don’t want to come across as a weak link and a sucker that he can use again.

How can I handle my ex at my autistic social group with dignity?
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