I was reading an article at LifeHack.org called 10 Ways We Hurt Our Romantic Relationships. This was one of the 10 ways:
5. You spend like a single person
This was a hard lesson for me to learn — until it broke up a 7-year relationship. When you’re single, you can buy whatever you want, whenever you want, with little regard for the future. It’s not necessarily wise, but you’re the only one who has to pay the consequences. When you are with someone in a long-term relationship, that is no longer a possibility. Your partner — and your children, if there are or will be any — will have to bear the brunt of your spending, so you’d better get in the habit of taking care of household necessities first and then, if there’s anything left over, of discussing with your partner the best way to use it.
This is an increasing problem these days, because more and more people are opting to keep their finances separate, even when they’re married. There’s nothing wrong with that kind of arrangement in and of itself, but it demands more communication and involvement between the partners, not less. If you’re spending money as if it was your money and nobody else has a right to tell you what to do with it, your relationship is doomed.
The funny thing was that the article was accompanied by this ad for a dating site:
100% free for beautiful girls! Whatta deal!