What if he says no?

You thought of him as a friend, but then he caught your attention in a different way. Perhaps it was his good manners or the way he smiled at you when he spoke that drew you to him. In any event, time passed, and failed to express any romantic interest. Therefore, you decided if he wants to go beyond being just friends. To your deep disappointment, he kindly but firmly said no.
Naturally, you are hurt. However, do not overreact; try to see things in proper perspective. Yes, a young man has said that he is not interested in a romantic relationship with you. Remember, his decision does not change your worth as a person, nor does it negate the fact that others continue to love and respect you. In fact, his decision may have less to with you than it does with the young man’s own personal goals and priorities.
If you are a Christian, you may remember, too, “God is not unrighteous so as to forget your work and love you show for his name.” (Hebrews 6: 10) You are still valuable. You are asset to God as a single person. Since the most high and others highly esteem you, why should you lose your self-respect?
You may still feel like a failure or fear that you may not be marriage material. However, just because you do not appear to be “right” for this young man at this time does not rule out your being “just right” for someone else. (Judges 14: 3) so rather than view your search for suitable marriage mate as a failure, recognize that your effort have yielded one beneficial result: you have learned that this young man is not for you.