>>124987133>Professor Marc LeGrand >Jason Woodrue>Batman>Bruce Wayne (yes separately)Pamela had a naively bad taste in men prior to her origin and couldn't cope with Batman later rejecting her because of the toxicity informed by past relationships, so she resorted to misandry as a coping mechanism. In almost all of her origins she's defined by being pretty thin skinned at heart, and needing to 'grow thorns' so to speak to compensate, placating her empathy by projecting it onto plants instead of people.
It's also worth noting, but "Poison Ivy" evidently used to be a euphemism for venereal disease at the time of her first appearance, hence the misconception "once you catch poison ivy it never goes away" which she alludes to throughout her debut appearances. It kind of plays into her being somebody who extends the cycle of sexual violence through deceit and dubcon manipulation.
https://www.youtube.com/watch?v=ZRfRITVdz4k 
