The context of the following conversation is Bailey took Kendall's girlfriend out to dinner even though Kendall didn't know it at the time.:
Kendall says I am so mad at Bailey..
The friend responds What happened?.
Kendall responds He took out my girlfriend and never let me know..
The friend responds Was she your girlfriend at the time?.
Kendall responds No, it was a little before we started dating..
The friend responds Well then you shouldn't be mad..