Pittsburg, KS – It all started with a little wooden knob.“For my birthday, he gave me a knob and made me wait until our two-year dating anniversary to find out what it went to,” said Carly Stene, a Pittsburg State University senior clinical lab sciences major from Lenexa, Kan.The “he” in this scenario is Blake Bullinger, a PSU senior automotive technology major from Colwich, Kan.The veil of mystery surrounding that little wooden knob was lifted on Oct. 9 – their anniversary – when Bullinger g…