He popped the question, you said yes, so now it's time to party! We hope you like parties, because now that you're engaged, you'll be going to a lot of them.
An engagement party is the first in a series of wedding-related celebrations. It's followed by bridal showers, bachelor/bachelorette parties, the rehearsal dinner and (the grand finale) the actual wedding reception.
Not every couple has an engagement party, and it's completely optional. But many couples see it as an important occasion that marks the first time friends and family come together to celebrate your future marriage.