When it happens it happens! It might be number one, it might be number ten, it might be the one you meet shopping or waiting for an oil change. My feeling is to be open to it when it happens, and don't try to force it.
As far as people you meet online, I went with the idea that I was going to enjoy the time with every one I met, even if I knew immediately we were not a match. And I found that it really did work.
