Paying no mind

Saw this Cancer guy that I used to be involved with. Things ended with silent treatment in his part. We know the same people so when I went with another friend to a house and he was there, he seemed to be theatrical & flamboyant in conversation with the people I was with. That's odd because he's usually so casual and laid back. It seemed a little obvious that he was trying to stand out.

But naturally, I paid him no mind and just talked to other people and look at my phone. I just don't pay no mind to people who purposely seek attention, I've always been that way. It's probably super arrogant to do that but it's me.

Wanted to Know...If being a little extra is something that crabs do? In certain situations? I've never seen him act like that.

And second question..what do you think he probably thinks of me for ignoring him? I didn't do it purposely, but I just don't ever buy into people who do that.