New research says that women can pick out cheaters even from looking at photos of strangers. Apparently, a cheater exists in seven out of 10 marriages. Western Australian scientists say that women can spot out sexual unfaithfulness by just looking at photos of strangers. During the study, color photos of both men and women were shown to people of the opposite sex. Women were pretty good at spotting the unfaithful men and they only got it wrong 38 per cent of the time. Men were not so good at this and they did not show any talent in spotting straying women from photos they were shown. Infact, men got it wrong 77% of the time. Women seemed to think that masculine looking men had a greater tendency to cheat. "Masculinity is a trait that women find very attractive... so masculine men probably have more opportunity to be unfaithful," researchers explained.