You're interrupted by Amy's boyfriend Chris

You're about to ask Liz something, but before you can say anything, you hear the sound of a key opening the apartment door. Then a moment later, you hear the voice of Chris, Amy's boyfriend! You've met him a few times before, so without turning around, you're able to recognize his voice.

"Amy, sorry for dropping in on you like this, but ... what the fuck are you doing?!" he yells in shock, seeing his girlfriend sucking some guy's cock. He's so shocked by what he's seeing that he doesn't even register the fact that Amy's sister Liz is not only topless, but also has drying cum all over her boobs.

Amy takes her mouth off of the cock she's been sucking and looks at her boyfriend. "I'm just sucking John's cock," she said, plainly.

You turn and look at the enraged boyfriend and a second later, all the anger drops from his face. "Oh," he says. "Okay." He then walks into the kitchen and grabs something from the refrigerator, acting like it's perfectly normal and reasonable for you to be fucking his girlfriend. "Just thought I'd swing by and grab some leftovers from yesterday. You don't mind, do you?"

"Nah, take as much as you want," Amy says, then resumes sucking your cock.

Wow! So apparently as long as you make eye contact with someone, it seems completely normal to them that you can use any woman (well, ones from 18 to 40 years old) any way you want. That makes it easier to use women that have boyfriends and husbands.