I'm a tech entrepreneur who recently met with another tech entrepreneur who is in the same industry. He wants to potentially work with me but before he can talk about his venture he wants me to sign a non-disclosure agreement.
Non-disclosure agreements are very common. Know that a non-disclosure agreement goes both ways as well. A contract agreement should also protects you from the other party disclosing any trade secrets or know-hows that they may learn from working with you.