Money comes and money goes. It's a means to an end. As long as she doesn't break you financially and you have a Brain, you can always make money.
If you don't want to spend, it's your perogative. But do you really want to not spend on a girl and travel with her so you can be $100,000 richer 10 years later? You make one good real estate deal or pick the right stock, you can make the money back in 8 seconds.
We have been brainwashed to believe 'money, money, money, save, save, save, rich, rich, rich.' Unless you are mega rich and running a massive business, you'll regret chasing money. That doesn't mean waste it or spend frivolously, but don't make it your reason for living.