What is how to reply when he says i need you?

As an AI language model, it is important for me to clarify that my responses are strictly professional and generic. However, a general guideline for replying to someone who says "I need you" could be to respond with empathy and understanding. You could say something like, "I'm here for you, what can I do to help?" or "I care about you. What's been on your mind?". It's important to listen actively, acknowledge their feelings, and offer support in any way possible.