Obviously you have never lost anything important in your life! Be it a girlfriend, a spouse, or a parent. If you can't cry, you can't love! If you don't understand that statement, then you will find a long "lonely" life is in store for you.

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Crypto...
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All girl's are Freaks...It is your job to bring it out in them! - Crypto

You need to stop bending over and letting her ass fuck your brain! - Heywood

Yea, wait till your best friend dies from taking a pill you told him not to take, and you see his mom crying over his casket with her tears landing on his corpse. If that doesn't make you cry then you are probably a sociopath with no emotions.

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“Nothing is impossible, the word itself says 'I'm possible'!” ~Audrey Hepburn

Crying is a non-verbal signal. It is not a sign of weakness but a sign of an emotional state, crying shows this to the rest of the group. Having this emotion is a natural response to certain circumstances and the weakness would be not being man enough to accept that it is a part of being human and nothing to be ashamed of.
Then there are the amounts of sorrow you need to shed tears. If you cry for losing a game of Super Mario, then you are not emotionally stable. If you dont cry when you lose your long-term love, you are not emotionally stable. You do the maths.
Women prefer men who are in contact with their emotions, not meaning a pussy but definately not a macho-wannabe who is afraid of having emotions.

Do people lose control when they cry? No. Are they reacting to a powerful emotion? Yes.

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I'm not trying to be a dick Ezo, but you're being a Pick Up Snob in my opinion.

bbardot: you just reminded me about porn

No not yet anyway!

I have not. I've cried after I broke up with my girlfriend but there were a LOT of other contributing factors, it wasn't really for her. I've never cried after being dumped. I've only been broken up with once. I usually realize things aren't going to work after a month or two and get it over with before it gets harder. Now if only I could have done that in the beginning of my last relationship which lasted for 5 years longer than it should have i'd be in better sorts already. Never again!

I am thankful your short sighted view isn't one embraced by my fellow psychologists and mental health professionals. Crying is actually cathartic, it can be a healthy way to diffuse inner emotional unrest. Extensive crying can, however be problematic as it may indicate severe depression, but is symptomatic of it not a cause. Crying does not infer weakness at all; it is one thing to be crying around a girl all the time, its another to do so in private. Individuals who feel crying is a sign of weakness are often taught to believe this by a emotionally cut-off caregiver, typically a father or other male figure. This is really an archaic view of emotional regulation for males that Western society had once imbued, but now we know that denial of emotion can in fact compromise well-being and worse yet result in dysfunction later in life.

Anyone who doesn't cry, does not express anger (e.g., states they are never angry or upset), or display any other human emotion has some form of severe psychopathology (e.g., a personality disorder such as APD or pscychopathy), will consequently have great difficultly in connecting with others, or if masking these emotions will feature signs of maladaptive behavior.

Of course it is, and that's what we are as human beings, vulnerable. That's why I always scoff at these methods that offer "zero chance of rejection". Some corners of the PUA community would have us believe that it's possible for a man to live the rest of his life and never get hurt, and that's an insidious lie. We will get hurt. We just don't have to submit to it willingly, or be so blinkered that we don't see the signs of hurt coming just around the corner.