Men, much like women, have their own set of insecurities and secrets they won’t necessarily share with just anyone; especially if they’ve been hurt in the past. However, if you want to know men in general much better than you do now, it’s good to know what men want you to know but will never tell you.
Remember, it’s quite a difficult task for most men to reveal their feelings to a woman. Some may have tried it in the past only to have been placed in the category of not being manly enough.
Perhaps they’ve seen the reaction of some women through their friends, so they don’t dare share their most intimate secrets with just anyone. If you find yourself in the situation of knowing something is off but you simply can’t put your finger on it, it may be his own little (innocent) secret that he’s not about to share easily.