Lacoste Perfume

This Lacoste Touch of Pink Perfume was given to me few years back when I joined a focus group organized by a local magazine. I do not really like the scent but since it is free, i use it. 

Have u tried this perfume before?
Is it true that Perfume cannot be kept too long and will expire? How long can we keep a perfume before its fragrance is lost/changed ? 2 years?