Did you mean to say she IS insecure? because she definitely is. I have been approached by 2 married men before and they're both good looking and financially stable. I refused them because i'm not an insecure person AND i have enough confidence to not want to be " the other woman". I've had a big crush on a guy who (at the time) had a gf, it didnt go further than a friendly flirting (no touching involved, no kiss, no hugging, just a friendly banter). Cats problem is much more deeper than just not using her head. She seriously needs psychological help and a good therapist. She's delusional if she think they're both going to have an ever lasting "love"