If the man has an ego, and you can tell he does, its weak. A man with a strong ego is more self contained, and not trying to prove himself wether is to himself or others. You will learn to tell the difference.
Ego is potential, or ones perceived potential of value. Its a mans mission to accomplish and embody this ideal version of himself. Bridging the gap is what a mans life should be. The mans vision (ego), how he perceives himself in his head vs reality, and how he relates to the difference, is what makes his ego strong or weak.
Depending on how you come between, or support that man's vision, denotes your place in his life. Did that answer your question?