The phrase "If it seems too good to be true... it probably is" cautions against accepting situations or offers that appear excessively favorable without scrutiny. It serves as a reminder to approach seemingly perfect circumstances with skepticism, as they may often hold hidden pitfalls or disappointments. This wisdom encourages individuals to be vigilant and thoughtful rather than impulsive when faced with attractive opportunities.

In the context of Melody Carlson's book "Never Been Kissed," this quote reinforces themes of realism versus idealism. Characters might grapple with their desires and the allure of seemingly perfect relationships or scenarios, ultimately discovering that true fulfillment often comes from embracing the complexities of life rather than chasing unattainable perfection.