My new girlfriend earns over double my wage any advice about the problems that will come from that?

We are both in our early 30s and I earn an ok wage but in her job she earns huge amounts of money. It wouldn't bother me before you think I being silly but she can afford to go on expensive holiday and restaurants etc. I can't keep up with her lifestyle and feel eventual it won't be enough. I'm not interested in a lecture about male ego or what not it is what it is and there is a difference if I earn more than her. Is this relationship doom to fail?

My new girlfriend earns over double my wage any advice about the problems that will come from that?
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