You instruct Emma to seduce Sophia

That weekend Emma and Sophia go out dancing. At your urging your girlfriend made sure to get her best friend as wasted as possible. You instructed Emma to dance closely with Sophia - to touch her as they danced, and to talk about sex at every opportunity. You wanted Emma to get Sophia extremely worked up.

During their evening Emma texts you regular updates like, "I can feel her cock when she grinds against my ass!" and "All the boys in the club went wild when we made out on the dance floor!" Finally you got the update you've been waiting for, "On our way home now."

The two girls entered your apartment loudly - clearly drunk. Emma says she'll go make a drink and then heads to the kitchen. You meet her there without Sophia noticing you.

"I got her here for you, drunk and horny," Emma whispers and then gives you a big kiss. Sophia isn't the only drunk and horny person in the apartment. "What do you want now?" your girlfriend asks after she breaks the kiss.