You and the siblings were sitting at a picnic table After a "little" battle with the Sparrow Academy, and Klaus notice a lipstick kiss on Five's lips

Klaus: "Bro, what happened to your face?"

Allison look at you and see the lipstick on your lips and grin

Allison: "Did you do that?"

You: "I did not do that." You scoff and Five grin a little.

Diego: "Then who did?"

Allison try not to laugh

Five: "Yeah who?"

You laugh and the others join in.