I believe in any courtships, it's the girl who holds the key, i.e. she is the active agent in the relationship.
Even though sincerity is important, it's not the determining factor. The determining factor is whether she likes you, and the first impression counts. If the girl likes you, whatever you give her will come across as act of love as far as she is concerned (likewise, if you like the girl, even her soiled panties will get you all excited). It doesn't matter if your gift is worth $30 or $3,000. It never works the other way, that she likes you because of your gift. She likes your gift, that's all.
If the girl likes you, she sees you as her Protector, even though deep inside you know you are a ball-less shit. If the girl doesn't like you, she expects you to her Provider.
There is a subtle difference between the role of a Protector and that of a Provider. The problem with mangina is they are not protectors at all, but they think by providing (and continually provide) they can somehow be elevated to the role of a protector.
It's not what the man does that makes him a protector or provider. It's the manner in which the girl treats you that defines your role as a protector or provider. A girl will always love her protector, but make use of her provider.