Money can not buy you luck, but it can affect it.
A survey conducted at Cornell University found that couples who earn a chance also have a more stable relationship, are happier, and have more chances to marry.
Patrick Ishizuka, author of this research, says that equality fosters stability and that equality of man and woman in economic terms can make the love affair stronger and better.
There is also the theory that couples who earn approximately the same amount of money are more likely to decide on marriage because they know that the community includes incomes from both sides and no one will be dragged or pushed.
Although marriage is common after marriage, research has shown that partners feel better when both contribute approximately equally and freely feel in spending and the allocation of assets and property.