One estimate states that 60% of Valentine's spending occurs in the five days prior to the day of romance. According to American Express, 4 million Americans expect to pop the big question or be proposed to on Tuesday.

Here are a couple of other facts, by the numbers, for Valentine's Day:

8 Billion - Number of Sweethearts candies (the ones with the cheeky/flirty phrases on them) produced by Necco annually.

$17.6 Billion Total amount expected to be spent on Valentine’s Day, per a National Retail Federation estimate. The average person celebrating Valentine’s will spend $126.03, up 8.5% from last year ($116.21).

[ via TIME.com ]