I expect this should be obvious, but you basically have two options here. I'm going to assume that you're not a uggo or a fatty if you are (apparently) having other propositions presented to you and you're turning them down, so I will keep that assumption in mind.

Option 1, is to attempt to get to know him. Simple enough. Quit being creepy, gawking from a distance. That will get you a quick ticket to "Restraining Order" land. Instead, confront him casually and propose a rendezvous elsewhere to get to know him better.

Or, of course, option 2 is to quit being a cold bitch and take up one of those other offers, if you aren't bullshitting. The guy who you think who could be "the one" might turn out to be a dick, and you could be turning down all kinds of fellows who just want to give you their love (and inevitably get their dicks wet).

On the other hand, if you are bullshitting, you're probably ugly and therefore a terrible person, so you should probably just give up or take the advice I gave to the last slag that whined to me about their superficial problems that was featured in the special Relationship edition of Ask Dr. Nomad in March, 2010.

Hope that helps!
Dr. N.