I think you should tell her you how you feel and here's my reason: firstly, if you don't tell her, the feelings will keep eating you up inside, Secondly, she might feel the same way about you and not know how to express her feelingsas well, Thirdly, If you decide to bottle it up, your friendship will not be the same again because of your feelings,

So the way i see it, the day your heart betrayed you and you started liking her, that was the day your friendship was compromised, (not that it's any fault of yours),

I think you should tell her how you feel and make it clear that there are no pressures, if she feels the same way about you then bang! good for you, but if she doesn't then I'm sorry, you'll have to give your heart time to heal or get over her before your true friendship can really continue,

I don't think that relationships can be completely equal, that doesn't mean that it's a bad thing, Relationships are like waves with highs and lows, and at each point there's usually someone holding and it could be either partner, Now If it is always the same person holding the reins on the relationship, then it becomes worrying, otherwise i think it's perfectly normal,