Men just can't read a woman's mind!

Washington: Think twice before giving a sparklingly smile to a guy, for your friendly cue could be taken as a sexual come-on by them.

According to researchers, guys have trouble reading non-verbal cues and often mistake a friendly smile to mean sexual interest.

And now, the researchers have set out to discover why guys are clueless.

According to the new study of college students, guys are somewhat oblivious to the emotional subtleties of non-verbal cues.

"Young men just find it difficult to tell the difference between women who are being friendly and women who are interested in something more," Live Science quoted Coreen Farris of Indiana University's Department of Psychological and Brain Sciences and lead researcher of the study.

This lost in translation phenomenon plays out in the real world, with about 70 percent of college women reporting an experience in which a guy mistook her friendliness for a sexual come-on, Farris said.

Surprisingly, the study found that guys mistake females' sexual signals as friendly ones. The researchers suggest guys have trouble noticing and interpreting the subtleties of non-verbal cues, in either direction.

The study is published in the journal Psychological Science.