According to Sofia

Sofia has a rule: if it's not technically cheating, it doesn't count. That's the whole joke, and the game keeps testing how far the loophole stretches.

She lives a comfortable life with her boyfriend Bob and insists, sincerely, that she'd never betray him. Parties, dares, strip games, and a growing list of "exceptions" say otherwise, and her personal rulebook keeps getting revised to fit whatever just happened.

You watch this logic unravel from Sofia's side of the story, moving through her daily temptations and rationalizations as scenes escalate from teasing to considerably less innocent. It's played straight for comedy rather than romance, so don't expect Bob to be in on the joke.