He keeps lying about this chick, why?

My ex (and a friend... also ex) texted with this chick from work all the time. I asked him probably more than 10 times (whether as a joke or plain forward) whats going on and why/what is he hiding.

All of those 10 times he denied having a relationship with her nor liking her (that way). He admitted texting though. This resulted to our break up, bc I even recorded him secretly and he freaked out.

Anyway... I asked him one final time again. Told him exactly "now when we are basically strangers again, tell me the truth". He denied again.

I mean was he lying once again or I lost my mind?

I see them online on both Viber and Messenger at the exact same time.

He keeps lying about this chick, why?
Post Opinion