I think it's not necessarily about what the both of you do, as it is about how you both feel about your relationship and each other. If you're both cool with doing your own thing and occasionally getting together, then you're fine. (Don't get sidetracked because "other couples are doing everything together", that's bullshit.)
However, if you do want more, or different than this, you really should talk to her about how you're feeling.
Okay, what I hear you saying is that you want more out of this relationship. More attention, more interaction, more time together, more connection. She, on the other hand, seems to be happy by herself and doesn't try to meet your needs, or just makes empty promises that she doesn't keep.
I don't think it can go on like that. You would forever have to live with your needs not being met, hoping for a change that doesn't come.