She is very convincing

Her smile grows more bold when you neither attack or run. She takes your hand gently with hers and guides it to her rather sizable nut sack. “Here feel how nice and soft they are. Yes, give them a squeeze, Ooh, yes just like that. Maybe just give it a kiss, right on the tip, oh yes that feels nice.”

You look up at her, “You are already starting to cum.”

“Oh, that’s because you are doing so good.” She rubs your head softly, “Here stick out your tongue, good girl, there, just try one little drop, yes right on the tip, oh there, isn’t it tasty.”

“Oh it is. Very good.”

“See, now imagine what the it will be like in your mouth. Good girl. A little more.” You look up into her deep swirling eyes as her cock slides through your eager lips. She is content to just fuck your mouth while you stroke the shaft and kneed your fingers into her soft pliable nuts. “Ok, how about just a bit deeper. Just once, or maybe a few more times.” You nod. “Nice.” She hisses then grabs your head and plows her cock down your throat. You can feel your throat stretching to accommodate her girth and you gag violently. She doesn’t relent. She proceeds to rail into you five, six, seven, ten, more times till finally when your body is screaming for air, she holds your head against her torso and floods cum into you. Your belly swells with the insane volume. Finally after her body shudders twice she lets go of you and you fall back on your bottom.

“What the fuck?” You yell, hand finding your mouth. You are a bit shocked at the lack of cum on your face.

“Don’t act like you didn’t like it. We both know you did. Plus look, the cum has you tingling with energy. Your magic is powered by sex. That’s what makes you immune to my energy drain. Your magic just feeds it as the sex feeds your magic. I think you are stronger than me. Wanna fuck now? Or would you rather munch on my pretty little cunt? I’m happy to do either. I haven’t seen a sex mage in a millennium. We definitely need to fuck for, I don’t know, at least like a full day or two.”

Just then the subway train that you know takes you home pulls into the station. This could be a good time to escape.