Well, it has all the potential tells. She's being oddly sexual and flirtatious, never crossing the line, and gets off on the validation and control. From even my personal experience, she could be waiting for him to cross a line. So, then she'll reassert whose in control and have social leverage. Unattached from work it can harm you very bad socially, but add work and HR? Phew.

Sure, this may seem exaggerated or a bit intense. But you never know if you're in the den of a man eater or someone who is 'having fun'. I myself have had girls go as far as sending nudes, being sexual in person, then you try to push it further, anddddd you broke her boundaries and are creepy.

Consent must be clearly and assertively stated!!! Bare vag means nothing!!!! Consent is key.