You're the best friend a screw-up could ever have. I hope that doesn't change.
The two were both new freshman to the school, and connected over the fact that they were both in the gifted program. Despite several rough patches, they remained best friends until the summer after their sophomore year when Alli kissed Jake Martin, Clare's ex-boyfriend and stepbrother, whom she still had feelings for, in the cabin. Clare witnessed the kiss therefore cutting off their friendship and the two went on to completely avoid each other for the first semester of their junior year. However, they reconciled in In The Cold, Cold Night (1), when Alli, though initially hesitant to do so, helped Clare finish writing the holiday edition of The Degrassi Daily along with all of their grade nine group of friends. They appear to have completely mended their friendship as of the Season 12 premiere.