The context of the following conversation is Jesse set Robin's house on fire after finding out that she had been cheating on him for years.:
Robin says He is in jail..
The friend responds You put him there..
Robin responds I didn't start the fire, he did that on his own..
The friend responds If you had never cheated, he would never have burned your house down..
Robin responds You are taking his side, you are suppose to be my friend..
The friend responds I am, but it is your fault too..