"How can money be the root of all evil, when shopping is the cure for all sadness..." Elizabeth Taylor
Most of us have been there at one time or another - facing the prospect of getting through a Valentine's Day as a "single" rather than a couple.
Consider doing something special and fun for the un-couples among your customers and visitors.
You could make your shop a 'Valentine's-Day-free-zone' and promote it that way. Consider what music you'd play... oh how the mind boggles!