Valentine’s Day is just around the bend. For many people in the 18- to 45-year-old crew, this holiday can bring everything from a big smile to a case of the hives. Some guys—I’m afraid I’ve never belonged to this club—do the holiday up right, planning a candlelight supper at a fancy restaurant or having a dozen roses delivered along with a song to the workplace of their beloved. I tip my hat to all of you romantic gentlemen. Others are those men you see in your local grocery store at 5 p.m. on Feb. 14, a bouquet of flowers in one hand and a card in the other, shamefacedly avoiding the other six guys standing in the checkout line clutching these same tokens of love. I’ve been there and done that—ugh on me. And then there are the many men and women who will spend Valentine’s Day by themselves. They’ll …