Mystery and Masquerade

This scenario starts off with both of you preparing for the event separately. You're attending a grand masquerade, but the twist is that your partner doesn't know who you are. Each of you will arrive separately to a fancy ballroom filled with many other masked individuals.
Throughout the night, you'll interact with each other pretending you're strangers. As the night continues, and the mysterious dance progresses, you'll slowly reveal clues about your true identity. Not too much, keep the intrigue intact.
As the night draws to an end, you will lead your finally unmasked partner to a private suite. This is where the second part of your roleplay comes in. Remaining in character, you'll carry the thrill and the mystery into your more private, more intimate moments.

For this roleplay, you will need exquisite masquerade attire. Ladies can opt for a sexy adult ball gown while the gents can choose a dashing tuxedo with a playful hint of sensuality. Don't forget about accessories. Choose masks that not only match your outfits but also effectively hide your identities.
Next, you'll have to carefully orchestrate your arrival and interactions. You don't want to bump into each other too early in the evening, yet you don't want to miss each other either. Plan it out so you have enough time to build up suspense and anticipation.
Finally, book a private suite at the same venue or a nearby hotel. Make sure it's luxurious and has the right atmosphere for continuing your passionate masquerade. Candles, roses, and champagne are classic elements of a romantic setting. Use them to create an enchanting ambiance.

For maximum realism, try to act like you don't recognize each other. Use different but seductive mannerisms and charm your partner anew.
Another great tip is to write secret notes to your partner throughout the night. These can contain flirty sentences, compliments, or even just harmless small talk - anything that can increase anticipation without revealing your identity.
Always remember, the key to a successful roleplay lies in staying in character. Don't break the immersion even when you are alone in your suite. Ride the wave of the mystery, and allow it to take your intimate moments to new, exciting heights.