Coworker admitted to me that she 'checks me out', what should I do?

Okay so basically I've been friends with this coworker for a little over a year now, and we joke around a lot and that kind of stuff; one of the jokes we pass back and forth is that she's a pervert because she always checks out guys and is super obvious with it, making noises and all lol
The other day though as we were finishing talking to go back to our departments she admitted that she checks me out too, and that's where this question begins. Should I bring it up or just let it lay? Or maybe something else entirely? Just don't want anything to be awkward between us now lol
I'm not entirely sure how I feel about her, I'll admit I had a crush on her when I first started but it's mostly faded by now, and I've already told her I'm not into doing casual things outside of a relationship (she offered pretty early on), but I never asked her out or anything and not sure if I want to or not.
What would y'all do?
17 d
Probably should have made this more clear in the post, but I don't really want to have sex with her or enter a relationship with her, just want to continue being friends like normal; was more of wondering if I should bring it up with her or not
Coworker admitted to me that she 'checks me out', what should I do?
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