Alyson Hannigan didn't rush into marriage on her mother's advice. The 'American Pie: Reunion' star has been wed to actor Alexis Denisof - who she met on the set of TV show 'Buffy the Vampire Slayer' - since October 2003 but she wait until they had been in a relationship for four years before saying her vows. Alyson was raised by her mother Emilie Posner after she and her father Al Hannigan divorced and Emile also told her not to marry in hast like she did. In an interview with The Sun newspaper, the 38-year-old actress said: "My mom, Emilie, always taught me to think hard about marriage. Her own, to my father, ended when I was two. So she said, 'Take your time.' "I met Alex, who played Wesley Wyndam-Pryce in the series ('Buffy'), and it was flirtation at first sight! "I was trying to pursue him,...