Is it OK to take pictures of someone without them knowing?

Is it OK to take pictures of someone without them knowing?
there's this girl at my college, she's so hot, red headed, and extremely nice and kind to me, I think I have a crush on her. I see her around and she's also at this math tutoring center which I sometimes go to even if I don't need help. Would it be OK if I secretly took some high quality pictures of her and even video tape her with my Iphone without her knowing so I can have some nice pictures and videos for my own personal satisfaction? Or is it illegal? Also we chat a lot so I'm not a complete stranger

U r a stalka lol

Well it's not illegal if it's in public, but it's kinda creepy.

Don't do that! It's creepy! Take it from a girl, NEVER do that!

That is COMPLETELY unacceptable.
Not only is that rude and disrespectful, but if she finds out she could potentially sue you.
And it goes without saying that you'd blow your chances with her.
Ever heard of dignity, creep?

You're invading her privacy. So no, It's Not Okay.

You could do it, it just be extremely creepy. How about just asking her out…

Dunno about illigal, but that is creepy as anything. And if she finds out, you are now know as your local creeper.

It is sorta creepy. But its not illegal, but whatever you do, your not allowed to put that up on the internet. And if you do end up going out… Delete all the photos! Make sure she doesn't see any of them.

Thats illegal! Invasion of privacy! And creepy! How would you feel if someone secretly take pictures of you and videotapes you without you knowing? Plus if she finds out you're doing that she would definitely avoid you.