Tessa was the Degrassi slut.  She started off her days at Degrassi in the Bye Bye Junior High Episode...her and Scooter were playing tag at the graduation and saw the fire that burnt down Degrassi Junior High.  When she got to high school, all of the sudden she turned into a monster slut and dressed like Stephanie Kaye used to dress.  She started dating Alex Yankou and he didn't kiss her when she wanted him to, so she cheated on him with Yick.  After she dumped Alex, he said that they couldn't be friends anymore.  She was never seen again until she slept with Joey and made Caitlin mad.