Matchmaker

You can start by cutting the deck. Next, say you need some "assistants" and take the red queens out of the deck.

Ask now the spectator to choose a card and take it, without seeing it ! Cut the deck where this card was.

Take the deck face-down and count 9 cards from the top, place one the queen there, and put all the deck back together. Do the same thing from the bottom.

Next, deal 2 piles on the table. Keep the pile where both the queens are. Repeat this operation until there is only the 2 queens and one other card left.

This card and the spectator's selected card form a pair. They can now see their card.