The context of the following conversation is Carson asked my mom about prom so that the event would go as smoothly as possible.:
Carson says Lee's mum is really an expert on these big events, she's helped me organise it..
The friend responds I was so proud of you taking this on!.
Carson responds Well, I just have responsibilities now that I've graduated and are part of the committee.
The friend responds You've certainly come a long way since high school. What's the theme going to be?.
Carson responds I would love to tell you, but it's a surprise!.
The friend responds Oh come on Carson! You know I won't tell anyone...