Why Griffen Johnesen cheated on Dixie D’amelio

So this relationship has been together from 2018 but it seems that Noah Beck wants Dixie so he forced Griffen to cheat and he will give him 90000 dollars so he did not cheat but tricked Noah so Noah beck back fired it on Griffen and everyone now thinks he cheated so Dixie has made be happy behind the scenes and seemed to kiss Noah .