Should I work overtime or see a new girl I've been dating?

Just want some impartial options off people, not looking for any major life advice. I've been dating a girl for a couple of weeks and she's asked if I'd like to go and see her before Christmas (Friday night into Saturday/Christmas Eve) but I've also been offered double time overtime at work on the Saturday. Now I don't need the money, but extra cash is always useful and we do have plans over New Year which is the following weekend. I don't want her to think I'm not interested by not going but at the same time I don't want to get in a habit of dropping overtime at work. My brain doesn't seem to want to work for me on this so I thought let's throw it out to the Internet and see what people think

Should I work overtime or see a new girl I've been dating?
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