Texas holdem poker game - player know their friend's cards

[jgy2001]

I was in a friend’s poker party game. I think I was new to this group, which I did not know everyone, and a few probably know each other. The pot is relatively small. At the end, I loss a small amount.

I rate myself a cool math – probability, slow play, not overly aggressive, not all-in pre-flop gamble and tight player.

Thinking back in the game, I think some of the players may share (or reveal) their hands among themselves during the game. If they did share their hands between themselves, can they increase their own probability and what can they do to hurt me?

[jgy2001]

not where we can ask questions?

[HalfSugar]

If they did share their hands between themselves, can they increase their own probability and what can they do to hurt me?

Yes.