depends on the person.

if she already knows that you are broke, then you have a keeper. she wants you for you, not your money so keep her.
but if you have been faking it, pretending you had some cash to entertain her and she is asking/expecting to go out to nice places, then it can lead to issues later

if she prefers snuggles on sofa's, more than buying new buckles and loafers. keep her