But, the second of these don't seem very helpful:
But economics can also tell us how to make Valentine’s Day special for our significant others. We economists may have taken all the fun out of Christmas, but I think we can make Valentine’s Day more successful. Here’s how. First, figure out how to signal to your mate that you really care about him or her. Second, if you want to give your mate a great Valentine’s present, spend money on yourself. Finally, one great gift is to stop hoping for perfection in your mate and, in the words of Stephen Stills, “love the one you’re with.”
The first and third pieces of advice are very helpful. First, do some onerous chore that will only make your partner happy. Third, be happy with your partner, warts and all, and don't be scanning the aisles for someone better. The second? Increase your earning power either directly (getting more education) or indirectly (making yourself more physically attractive)? I don't know ... enrolling in that community college course or getting a gym membership just doesn't seem to lead to long-term relationship stability.