Real men cry.

"Research suggests that when men and women display emotions inconsistent with the gender stereotypes we hold, we're apt to think that those feelings are more genuine and legitimate. Men are expected to show anger and stubbornness, women to express happiness, sadness, land fear. So a crying woman is just more of the same, but a sorrowful man is such a rarity that we believe he must be on the brink of disaster. Likewise, an angry man is common, but a livid woman is so rare we think that she must really be furious."

From Psychology Today