I'm kinda leaning towards the guys on this one, men tend to think we should know that we are confident in ourselves and don't tell us that we are beautiful, pretty, special and all the other things we want to be told that we are!
Personally I'm one of these people who find it really easy to express how I feel, if it's not vocally, it's usually written all over my face! My better half is the complete opposite to me in that respect, when we first met he would never tell me emotionally how he felt, or even physically how he felt, he has chronic back pain and being 20 with chronic back pain is just annoying as hell! But the more we have gotten to know each other, I've learnt his little mannerisms that subtly express how he feels, like when I'm sad, he cuddles me from behind because he knows that I hate people seeing me cry, when he's being protective, his hand automatically lands on my back or shoulder to pull me close, he tells me he loves me when he knows I really need to hear it but it's more the little things that express more to me what he wants to say.
Maybe you should be looking for these little signs in your partner, also you say you don't do much to impress each other anymore? Maybe you should incorporate a date night in to your schedules, one night a week ornery two weeks where you can dress up and go out, or dress up and have a meal at home, go to the movies, romantic walks, double date, anything that you guys can do where you can impress each other just that little bit.