There are two types of people that get up my nose.
The first type is the kind of person that insists on remembering the person you used to be, but insists you respect the changes in their life.
The second is the person that keeps telling you that you were more fun back when... insert thing here.
In truth, they are variations the same person, and they're self centered and very insecure.
Try to talk to them, reason with them, and then finally set them free. Acknowledge and praise their evolution, but don't do it at the expense of yours.