Chess isn't a gambling game. Do you play Chess for money(or bet on Chess games)?
Anyway, the people, who get angry and act butthurt when they lose money on gambling aren't mature. Are the guys you were writing about teenagers or young adults? The guy, who lost money should grow a pair of balls and accept his loss. Gambling isn't for children or weak minded men. I totally agree that money can destroy every friendship. If those guys really care about their friendship, they wouldn't agree on playing a gambling game with big bets, or at least they would not care that much about losing or winning 10 dollars.