I'm in love with a girl engaged to Someone and she loves him and she don't know about me ,what can i do ?

try find another one, *** hole

Get over it...love is a two-way street...you can't possibly believe that you are in love with someone who doesn't even know about your feelings.

Step back and think for a second. Seriously.

Clearly you are confusing your emotions and need to find some balance in your life.

Dont tell her, if shes in love with this other then i doubt she'd feel the same for you. If you say something you'd probably just end up getting hurt, not only by her but her bf will probably have something to say!!

Best thing to do is move on and get over it.