Help me with a hot coworker

So this is my first time every posting to reddit, so sorry if I screw something up. I'm a longtime lurker, just never post. Anyway...

I work with this really hot chick, 9/10. She looks like a total slut (tongue piercing, lower back tattoo,etc.) but she's actually not at all. Or at least that's the impression I get.

Anyway, her and I are really good work friends. Really good. I have told her almost every detail about my relationship that just ended, and she told me all about hers. She's always asking me about it to. Like I said, we're friends.

What I want /adv/isors, is to fuck the hell out of this girl. She drives me wild, she's so fucking hot. And I definitely get the vibe from her sometimes that she wants me, although other times I feel completely friendzoned. I'm wondering how I can move out of the zone for even just one night.

I've been trying to add more talk about our sex lives into our conversations, and trying to be more flirtatious than usual, and it seems to be working. She casually said that I should come over sometime and check out her new apartment. So if I do go over there, I'm not sure how I can do this. I need help.

TL;DR How can I fuck a super hot girl who I'm very good "work friends" with?

There are a lot more details to this story if anyone wants them, but this is the jist of it.

Thanks for any help. :)