Any Ideas??

well get something that she really likes,
what are her interests?

Is there anything she's been obsessing over? Or even something she hasn't obsessed over something, like say you were walking along and you walk by something that makes her go 'ooooooo!' lol, just pay extra attention to things that catch her eye and surprise her with something she wants. This shows you pay attention and listen and are a part of her feelings and life - even when she doesn't know it, and it also shows you put alot of thought into it.... Best of luck. Happy V-day everyone!!

Take her out to dinner to a nice place
Do something with her
Write her a song and sing it to her lol
oo i know!
Set up a romantic place with candles flowers ballons that say i love you make it look romantic and write a poem for her then on vday
blindfold her and take her to the romantic place you made and read her the poem!.
Just a siggestion

i like what steph said.....pay attention to what your girl say "ooooo" to...