Change her perception of you.

You open the app again, and frantically search for a section labeled "Romantic." Eventually, you find it. Even in your lust-addled state, you quickly come up with the next three rules, which you add:

Whatever man she studies with, she will view him as her boyfriend.

Once she has identified a boyfriend for herself, she will not study with anyone else.

Will happily agree to any sex act her boyfriend proposes.

The hard part is keeping your fingers still enough to type, but in the end you manage it. You look up at her.

She notices your glance. "Is something wrong, babe?"

"Nothing, honey," you smile. "It's just... you would never cheat on me, would you?"

Milkmaid Maddie gasps. "What are you twalking about?" she says. "You know I lwove you, don't you?"

"I do," you say. "It's just, if you love me so much, then why haven't we had sex yet? It makes me worry that you're having sex with other guys on the side."

"I would never cheat on you!" she says. "And we can have sex any time you want." You imagine the poor people studying in the library who have to overhear this conversation.

You're ready to make Maddie an offer, but you want to make sure it's safe first. You look through the app until you find what you're looking for under the "Society" tab. This tab, you figure out, deals with how other people look at Maddie. For example, one rule says: "Is generally perceived to be intelligent." You're not so much of an asshole that you would change that. Instead, you add an extra rule:

If anyone notices her performing sex acts in public, they will not notice the person who is performing those acts with her. Instead, they will believe she is masturbating by herself, and they will try to forget the incident.

Then, for good measure:

Cannot get pregnant from any sexual activity that takes place on a Monday.

"Babe? Who are you twalking to?" Maddie asks.

"No one," you say, saving your changes and putting away the phone.