The context of the following conversation is Even though their diet was going well, Jordan drank a soda as a small treat.:
Jordan says Everything on the menu looked so delicious.
The friend responds Hmm, I know. I usually get the Cobb Salad with lemon water and some breadsticks..
Jordan responds I had a healthy salad, the only exception, it was with a small soda..
The friend responds Hey, I thought you were on a diet? You shouldn't drink soda!.
Jordan responds I know, but it has been going so well, I deserved a little treat!.
The friend responds That's true, I guess it keeps you going strong..