You quickly scribble out "Occupants Must Have Sex" across the back of the couch that the two of you were sitting on, then sit back down, waiting for Amanda to subconsciously notice your work.
After awhile of watching TV, she makes a stray glance in your direction and subconsciously reads the text on the couch. After a moment, she speaks up, "Daniel? I know this is a lot to ask, but it's really just unavoidable at this point. This is... an unusual couch, but--"
"Yeah?" you respond, feigning ignorance as best you can.
She blushes and looks away. "Any occupants on this couch have to--do it." She whispers.
You pretend not to understand her. "Do what?" You ask coyly.
"Uh...ummmm," she stammers, looking down at her hands. "I mean, you know..." She looks up and bites her lip. "...have sex."
"Sex?!" You feign shock. "But you're married! What about your husband?"
She blushes profusely. "It's too late to worry about that now. We really messed up by sitting on this thing, didn't we...?"
She continued, "We'll just have to get it over with, and if my husband finds out, I'm prepared to take the full blame." She looks at you apologetically. "I hope this doesn't make things too awkward between us..."
"Well," you think aloud, "if we HAVE to do it... then fine," you respond as though you were reluctant. You set your soda down on the coffee table and stand up next to her. She follows suit and nervously approaches you. You both embrace in a kiss for a few seconds before she begins undressing herself.
She's wearing an off-white bra and panties underneath, but nothing more. She looks at you expectantly as you begin stripping yourself down to your boxers. She giggles nervously.
"Awkward," she says, "I never expected this from my first day with you... I guess we're both just victims of circumstance."
You nod and pull her into another kiss before the two of you get started on each other, laying down on the couch and making out together. You can hear some moans coming out of Amanda as you rub against her breasts; she seems to be enjoying herself, despite her protests earlier.
You both finish up about twenty minutes later, and lay down on the couch together. You quickly dress yourself again as Amanda sits up and looks around guiltily. "I can't believe we just did that... I hope my husband never finds out..." she says. Then she bites her lip, "but, you know what? There was something strangely exciting about it." She giggles, leaning against your shoulder and taking another sip of her soda.
"Yeah," you say, glancing over at the words on the couch, "I guess we'll just have to be more careful next time..."