 ዉሸት ከሚፅፍ ሰው በዉሸት የሚሸበር ሰው የባሰ ከንቱ ነው (እኔ የምፅፈው ዉሸት ነው ብላቹ ካመናቹ) ።
The only way he can hurt you worse is by lying (withholding relevant information is a form of lying) after he claims to tell the truth.