How much attention does a girl really need?

Anonymous
So I really like this girl and I know for sure she likes me. The problem is me not knowing how much attention I should give her. For instance, if I ignore, avoid or just don't give her much attention in general, she'll ask for it and ask if I want to call her, text her, so on and so forth. However, when I do give her constant attention, she starts shying away or being slightly colder to me. This is a problem because sometimes it really feels like I put a lot more effort into this relationship than she does/I like her a lot more than she does. Is there anyway to make her come to me while maintaining a healthy amount of attention so as to not have her feel like she's being neglected?
How much attention does a girl really need?
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