ena ' s ▁en roll ment ▁in ▁Columbia ▁has ▁her ▁face ▁Jul iet ' s ▁many ▁attempts ▁at ▁getting ▁rid ▁of ▁her , ▁r anging ▁from ▁ex cluding ▁her ▁from ▁an ▁exclusive ▁society ▁along ▁with ▁driving ▁Bla ir ▁against ▁her , ▁expos ing ▁her ▁relationship ▁with ▁her ▁professor , ▁Col in ▁For r ester ▁( Sam ▁Page ), ▁who ▁happens ▁to ▁be ▁Jul iet ' s ▁cousin ▁to ▁get ▁her ▁k icked ▁out , ▁and ▁spread ing ▁various ▁rum ors ▁about ▁Ser ena , ▁who ▁man ages ▁to ▁e va de ▁these ▁attempts . ▁Jul iet ▁then ▁rec ruits ▁Jen ny ▁and ▁Van essa ▁and ▁succeed ▁in ▁gas light ing ▁her ▁into ▁to ying ▁with ▁Dan ▁and ▁N ate ' s ▁feelings , ▁attempting ▁to ▁take ▁a ▁foundation ▁position ▁from ▁Bla ir , ▁and ▁returning ▁to ▁her ▁old ▁part ying ▁hab its . ▁Ser ena ▁is ▁re h abil itated ▁while ▁Dan ▁and ▁Bla ir ▁subsequently ▁discover ▁Jul iet ' s ▁reasons ▁for ▁ru ining ▁Ser ena . ▁Ser ena ▁was ▁supposed ly ▁in ▁an ▁ill ic it , ▁but ▁not ▁ever ▁consum m ated , ▁relationship ▁with ▁Jul iet ' s ▁half - bro ther ▁and ▁Ser ena ' s ▁board ing ▁school ▁English ▁teacher , ▁Ben ▁Don ovan ▁( David ▁Call ) ▁and ▁was ▁arrested ▁when ▁L ily ▁for ged ▁an ▁aff id av it ▁that ▁f als ely ▁accused ▁Ben ▁of ▁stat ut ory ▁ra pe , ▁out ▁of ▁concern ▁for ▁Ser ena . ▁ ▁The ▁hol id ays ▁has