You don't need more proof that guys apply rampant double standards when it comes to dating and sex... but here you go anyway.

According to a new study in a scientific journal called "Personality and Individual Differences", guys are more forgiving of a girlfriend who CHEATS on them . . . as long as she cheats on them with another woman.

According to survey of 700 college kids, half of all guys would stick with their girlfriend after she admitted to a little girl-on-girl cheating.  And 22%... or over one in five... would stick around if she cheated on them with another dude.  (???)

Jaime Confer and Mark Cloud are the psychologists who led the study, and they say, quote, "These findings are even more remarkable given that surveys show men have more negative attitudes toward homosexuality than women."

But it's actually not that remarkable.  Especially when you consider WHY guys are so forgiving of girl-on-girl cheating.  According to the study, quote, "Men may view a partner's homosexual affair as an opportunity to mate with more than one woman simultaneously."

In other words, guys are hoping it'll lead to a little threesome action.  So they don't really consider it cheating in the first place.  Not exactly shocking stuff.  But here's what IS sort of interesting:  It's the opposite for women.

Women are MORE likely to stay in the relationship if their guy cheats with a woman.  That's what 28% of them said.  And they're LESS likely to stay if he does it with another dude.  That's what 21% said.

Not a huge difference, but clearly women aren't down with letting their man explore any  gay tendencies he might have.  Not that there's anything wrong with that...

(The Register)