Couples ordered more sashimi, sushi and several Italian dishes than on the other days of the year, possibly because Italian is also considered a romantic cuisine.
Which items do people steer clear of during the holiday? Nothing says "I'll wait until after Valentine's to order that" than bread sticks with cheese. People are 85 percent less likely to place it in the GrubHub cart then than on a typical day.
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Solo diners gravitated to many cuisines traditionally seen as heartier ones.
"I don't want to assume too much causation or add the why, but it's clearly heavier, more comfort foods that people are ordering," she said.
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Indeed people ordering by themselves were 277 percent more likely to order from restaurants that identified themselves as pizza ones and 276 percent more likely to order from wing restaurants than throughout the year. Late night, Italian and pasta dishes were more than three times more common. The top three dishes that single orderers more commonly ordered on Valentine's Day than couples were yellowtail, tossed salad and chicken alfredo.
College being in session and Valentine's Day landing on a Friday last year might have helped fuel these trends since college diners skew results and people's dining patterns could change on the weekend, Mack said.
As for dessert, cheesecake took the cake.