Ease in to some cum-fetishism

Before you start to write on your girlfriend's outstretched arm, you decide it could be fun to gauge her response as you change her.

"Stace. Remind me again, do you like the taste of my cum?"

She looks at you and chuckles a bit. "Uhh... I mean, not really. It's slimy, bleachy, and when it's clumpy it's frankly disgusting. That's why I always ask you to finish on my chest or back."

That's what you thought. She'd let you cum in her mouth when she gave a blowjob, but she almost immediately spit it into her hand, sink, or whatever else was nearby. And she had never let you cum on her face. The best you got was pulling out and finishing on her ass or belly.

"Yeah I know. You're not the biggest fan.... but do you want to be?"

Realization dawned on her. "Oh. I guess if that's what you want. What did you have in mind?"

"Oh nothing too crazy...yet. But turn-around, I need a bit more room for this." Stacey hesitatingly turns away from you and lifts up her shirt, exposing her back.

You move towards her and write: LOVES THE TASTE OF CUM

As you finish writing. You ask her the same question you asked before.

"Ok. Let's try this again. Do you like the taste of my cum?"

She opens her mouth to respond and then pauses. Her eyes narrow and a look of confusing washes over her fact. "This is so weird. I still think cum is slimy, bleachy, and clumpy.... but suddenly I like that? Like... I _really _like that. It's like when you think of gooey chocolatey brownies and get a little jolt of pleasure imagining the taste." She pauses again in thought and then her eyes focus on you. "Wait.... what did you write on me?!"

You grin at your girlfriend's sudden response. It worked just as you hoped. But this was just the beginning. By the end of the night she wouldn't just love cum, it would be the very focus of her existence.