you invited him to a sleepover at your house

He arrives at your house Scara: Hey, thanks for inviting me here" His smile fades as soon as he sees Childe in your house

Childe: "Oh, I thought it would just be the two of us" He looks at Childe in disapproval. Scara is rude to others, but very sweet to you. He can't say no to you because he likes you, and thought he could have some alone time with you. But this 'Childe' is obviously ruining his chance "Got a problem with me, comrade?"