What is the most logical next event?

How to be a good prom date (for guys )
Help her make plans.
Prom is not just about the dance itself. The prom experience includes transportation, pictures, dinner, the after party, and more.
Offer your assistance with the planning process to not only share ideas, but also to show you care. Discuss whether you will be attending prom with a group or whether you two will be attending alone.