I can't achieve an orgasm! Help!

Rachel
So I am so puzzled over this. I have been having sex for years now, and have always loved it, can't get enough, adventurous, blah blah blah. (I'm straight by the way) 
All this time whenever I've had sex there were moments where I believed I came or something like that. Then one day just got kicks I order my first rabbit vibrator. I used that magical thing and then it hit me like a stack of bricks; "I've never had an orgasm before! That was my first!" And I still have amazing sex with my boyfriend and am happy and satisfied when we're done. But I'm still not getting the big O and never have from anyone I've ever been with. That is so crazy to me! It's just odd. I mean has anyone ever herd of this problem or can shed some light on it for me please?