Had to return to my former workplace for a business meeting (space was hired, and it was compulsory). I tell myself that I am a free agent, and to focus on the majority, but one former coworker is really strange. I got a lovely leaving card, with really nice words in it from this person (as did everyone else). I do not expect red carpet treatment upon my return after a few months away but just friendly acknowledgement. I went to a coffee morning and said hello to everyone, and the former coworker walked in and talked to all the guys and ignored me and my former female coworker (quite blatantly). Yet he came in the room several times to draw attention to himself, whilst giving me a side-eye look, observing me in front of my face when I was talking to a former colleague. I haven't run him down. I know there are more important things in the world, but I feel sad that this is probably the last time I will see everyone at my former workplace, and I thought it was a bit off.