Graveyard shift part 2

I worked at an east coast convenience store chain as a teen.
The asst manager quit and we had a girl from another store fill in.
She was a total slut, she got fucked by 2 guys in the back room at her store one night.
One day she pulls me in the cooler to ask me if I was willing to work a shift.
I kinda said no, so she gave me that look that could make a 17 virgin do anything (I ate pussy once, that was it) and says what if I get on my knees?
I assume she's talking about begging but smart-ass me said "it depends what you do" jokingly, then I said yeah, ok.
She says thanks, I owe you one, and goes back out.
I worked the shift and a couple weeks later it was just the 2 of us working a graveyard.
After the bar rush she called me in the back.
She was at the desk and said now's a good time to pay you back and turned her chair to face me.
I wasn't sure what she was talking about.
Then she tugged my pants towards her and I took half a step closer. I finally got a clue so I unbuttoned them and pulled them down a little.
I started getting hard but was shaking a little, I was shy.
She pulled down my underwear and my cock sprang out half hard.
"Hmmm" she stroked it until it was rock hard and started leaking.
She wiped the precum off the tip with her thumb and put her mouth over the tip, swirling with her tongue.
Holy Shit, it was the greatest feeling ever up to that point.
She bobbed for what was probably less than a minute before I came.
I said I think I'm gonna cum!
She went "mmhmm" and I came in her mouth.
I pulled it out and she spit my load in her empty coffee cup and patted my deflating cock and said now we're even.
I floated back out to the front.
Later she asked if that was my first.
I said yes and she said yeah I could tell. She got her own store a few months later.