Do guys really have a fear of rejection?  Myth or Fact?

Let me give you the background story first:  Some readers will remember that I had a crush on this guy and was contemplating whether or not I should ask him out.  Although many of you said that I should, I ended up chickening out and rarely saw him after that.  This guy (let’s call him “Crush”) and I do not hang out in the same social scene and barely have the same friends.  “Crush” and I ran into each other at an event about a month ago and it seemed like he was flirting with me.  Because I am shy around boys that I like, I wasn’t flirty back (my bad).  In fact, whenever I do like a guy, I tend to ignore him and do not throw any signals.  

To make up for the fact that I did not throw him any signs that I was interested, I’ve “coincidentally” showed up at some of the places that he was at. Unfortunately, I barely got a chance to talk to him or see him.  He has NO idea that I am into him but at the same time, I am frustrated that he’s not asking me out or taking ANY initiative to get to know me more.  I feel like he is attracted to me based on our prior interaction but WHY ISN’T HE DOING ANYTHING?  The only "signs" I gave are smiling and waving.  Is that not enough? 

Here is the split of opinions among my friends:

Group A:  “He’s just not that into you.  He had plenty of opportunity to get your email or phone number from someone else.  If he were really truly interested, he would have chased you.  Guys love the chase.  Although you and him rarely see each other, he could have made it so that he could see you by inviting you and your friends out to some event or something.  No move at all means he’s not interested.  Guys don’t have a fear of rejection when it comes to girls that they are interested in.”

Group B:  “It’s too early to tell being that you and him never really talk.  In fact, because you did not throw him any hints that you are interested, he’s not going to ask you out because he has no idea that you like him.  You are expecting too much if you think that he’s going to go out of his way to ask you out or put himself out there for a girl that hasn’t shown any interest in him before.  You’re going to have to drop some major hints that you are into him for him to make that first move.  Guys have a fear a rejection so they won’t ask out a girl unless they think that there is a shot that she’s interested.”

So which is it?  SO CONFUSED.   Right now, I am agreeing with Group A and am 85% DONE with this guy.  WTF.  There is NO way that I am putting myself out there for a guy that may not be interested in me and hasn't made any real effort to get to know me.  Shouldn’t guys be the ones putting themselves out there first? 

Do guys really have a fear of rejection or is that an excuse to justify them not asking out a girl?  Because I definitely have a fear of rejection but damnit, I’m a chick!  Isn’t it different when you’re a dude?

Sigh. 

Edit - I never acted repulsed by my Crush...I did smile and wave when we saw each other...I just never acted "flirty" to him.  Did I not do enough??  I did always say HI when I saw him...?  Do chicks always have to act flirty for the guy to take initiative?  Grrr.  Flirty is not me. 

UPDATE- Thanks for all your responses!!  Very interesting.  But just to clarify, I don't act mean or repulsed. I always "coincidentally" show up to where he's at (isn't that a signal?) AND what bugs me is that he could come out to an event that I will be at but never does.  I HOPE that Group B is right but because the Crush hasn't made an effort to get to know me more, I am still thinking (sadly) that Group A might be right.  I hope most of you guys are right though.  He hasn't given me enough to work with either.  I am scared of rejection too!!  The truth is, he COULD have made an effort to at least TALK to me and he hasn't really except for that one time.  Grrrrrrr.  SomeKoreanChick is not happy   Like the late great Aaliyah said, "TRY AGAIN." 

Personally, I think that this is a sick track.  Been hearing it at the clubs and on the hip hop station here in Los Angeles.  What do you think?  Hot or not?

Been meaning to update this site.  Lots of drama going on in my personal life that I haven't had time.  Hope everyone is doing well.  I will update as soon as I get a chance.

Edit - yeah I see that generally, we all think it's hot.  request this shit to your radio station! I love these guys because they are not only talented but also defy the stereotypes of what mainstream america thinks an asian american male is.