You said you were unassuming and did not think about getting married at all during that date. That's why John liked you. You had no expectations and you were just being yourself. It worked for you right? The more you are desperate to find a mate the more you will not find one. I don't think John was being desperate either, he was just honest. What I am saying is just enjoy dating and don't be desperate about getting married because you will not know what you will find and might be surprised. Like the way John surprised you.
I think what you mean is don't commit or be in a serious relationship if you don't know who you are. Part of knowing who you are is by relating to others and getting to know others by dating.
Maybe I'm just bad at relating advice or explaining myself but I think the christian psychologist Henry Cloud is wise enough to be saying those things.
I agree that's why pete's idea about women being vigorous in dating is ridiculous. But speaking of provoking others including women, you seem to have those skills. jk