The first stage, unanimously, was what Ogolsky and his co-authors called a "flirtationship." As one participant described it, "One of you has expressed blatant or intended interest. You know you like each other, and this is where it ends if one doesn't reciprocate flirtation."
Financial issues are one of the top complaints that couples have. Our attitudes to money can vary widely, and often a 50/50 split is attempted but fails in real life.