it's okay... no need surprise one 
surprise other things 
hmmm that case, why not get her some scent U like???
Well, she'll be wearing the perfume for u...
other than that, it depends on her taste, whether she prefers
something spicy or sweet, or strong or light, or citrus or
musky(woody)...
alot of different combi wor...
thus I suggest u getting her something which u like... Obvious
things not like "CK Eternity for men" 