In fact, researchers who study human attraction say, people do tend to form opinions quickly when it comes to romance.
Some think it takes just three minutes to decide whether someone's a potential mate (and that's before the drinks arrive), the Washington Post reported.
Findings about friends who click immediately might also apply to romantic partnerships.
In one study on friendships, people who enjoyed the first few minutes together were likely to develop a close relationship after nine weeks.
But instant attraction isn't just in our heads, there may be a biological basis to love at first sight.
Studies have found that animals are more likely to mate with partners they're genetically compatible with.
It's unclear whether this research applies to humans, but some scientists think we might be preprogrammed to spot "the one."