A gift for a couple

My partner and I have an open relationship and we are experimenting into swinging. And we are both really good at oral sex.

I fantasize of giving a gift to a couple. We would set them on a bed, faces together, so that they could look at each other, and even kiss and touch each other. And meanwhile I would eat her out while my girlfriend blows him. Slowly, so they can share the pleasure together. We would build their orgasms slowly, until they are both ready, making sure they cum together.