Lisa peeks in to see the pictured scene in the preview:
Lisa: "I knew something was going on. I can't believe you guys are doing this here. *sigh* I can do it much better, Max, you told me in the bathroom I was the best blowjob you ever had."
Alice: "You said what, Max?!"
Max: something something
Lisa: "I'll show you how he likes it, Alice." <- very pleased to have something she's "better at" than Alice
Alice: "Screw you Lisa, I can do it better than you. Let's do a competition right here, who can do it better."
take turns for a bit then double blowjob, in the end they ask Max to pick a winner.
Winner gains Mood, or a Persuasion check to say something like "I can't decide, we'll need more testing".
Either way:
>>
Alternating blowjobs while the other watches and/or double blowjobs unlocked at home.
You're welcome
@DarkSilver