Before you continue your search, you should consider whether or not he is interested in you. I have had remarkably similar experiences as you are having with the fireman but they have been with some policemen who have given me at least some idea that they were attracted to me--mostly in the form of a graze or cogent smile. This is the important point: I felt the need to go after them because they had hinted to me that they were also interested in me. Your desire to pursue the fireman should be based on something of this nature; otherwise, you may be headed for trouble.