Sense of interest usually comes first. That feeling usually slips through when you accidentally see or find something. This sense of attraction is the most basic feeling before you can feel the same with someone. If you are not interested in a person, you can not approach or find out until you can be amazed, even to love, love and love with someone. When you are interested, there is one little thing about a person that makes you want to know him more.
Everyone has an attraction that is only considered interesting by one or some of the people. For example, maybe your advantage is a straightforward person. For some people it might not be interesting and fun, but maybe for someone or some, they see it as your craze.
This attraction is easy to fade, especially if it is not accompanied by a willingness to get to know the person deeper. With the frequency of meetings and the minimal interaction, the attraction might be floating there. Being just an attraction, can not grow into awe.