how do you know a girl likes/loves you not just because you're rich?

Answer 1

Is she just happy being with you? Or going to a museum or a BBQ place? Or does it always have to be glamourous places and spending a lot of money?

It will help if she comes from some money, or has money of her own through work: then she's less likely to look at you as a wallet.

Answer 2

when they will spend their own little money on you and dont expect anything in return