So basically, are you a gold digger or not?
@OP would you say that her not having money has an effect on your love towards her?
Depends if you're well paid yourself.
For example being on 50k a year and having a gf/wife on 15k would seriously dent your pay packet as you would probably have to foot the majority of the bills, whether they be household or holidays, or just not get a chance to spend yours (say by not going on good holidays).
On the other hand both of you on 50k would mean you can both contribute equally and not have to worry about paying for the other to do things with you.