my brothers best friend - cartman x reader (kenny's sister)

y/n x cartman reader
y/n was just an average girl, like anyone at south park really. the one difference is that she was the twin sister of kenny mccormick, an outstanding baseball player at the local school. kenny and y/n were quite close, and that meant she was also close to his friends. but there was one friend in particular that stood out a bit more than his other friends. the name was eric cartman. everything about him just made her heart beat quicker! will y/n and cartman risk their relationship with kenny for this undying love? read the book to find out.

⚠️THIS IS ALL FOR JOKES!!!⚠️
my sister keeps making jokes about how cartman is her 'boyfriend' so i decided to make this for her.