It's about how women nurture a man's primal instincts.
Men have the natural instinct to provide (at least the ones who aren't looking for their mommy/more feminine). A high maintenance woman is either demanding things often, or easily receive services and/or gifts from the man. As well as the high maintenance woman gives nurtures his hunter desire--even if they already are in a committed relationship. Whereas, the low maintenance woman says things like "noo, you didn't have to. Don't worry about it! I can do it myself!" She constantly reassures him, even does the chasing herself.
High maintenance women are associated with being a complete bitch, but you don't have to--unless you choose to. Otherwise, be more open to accepting things, and ask him to help you with things. Do not go against a man's providing nature, or risk losing them.