I broke up with my my exGF a few months ago( i have new GF now) she is my coworker and we can't ignore each other so we agreed to be friends and act normal accordingly but we're still flirting everytime we're together(just flirt no sex anymore) then one day i found that she's seeing a guy from her uni and they always went to hotel every week(my sister friend is one of the receptionist and she know my ex but my ex didn't recognize her).

the thing is everytime i open up the topic about this guy or teasing her like calling the guys name she keep refusing it she said they are only friends and nothing happened between them and my mind is so dirty(she gaslighting me obviously)

Question is we're clearly just a friend to each other no feelings at all why she still refusing to tell me the truth that she seeing someone even tho there's a proof already?

I'm asking cuz i want to know the logic of woman why they are denying even tho we're both agreed to be friend only it means she is free to do whatever she want but don't admit it? Is this anti-slut defense? Is she still have feelings for me? Is she think I'll be mad and don't want to be her friend if she tell the truth?

P.s I read the sidebar, i know trp shouldn't care and DGAF about what woman think/doing plus she's my ex already bla bla.. but like what i said in my case i just need to know why woman keep refusing to tell the truth even you guys are just friend only (not a plate, not a FWB just a normal person who keep sharing life problem, work problem etc..)