Has anyone ever come across someone like this?

I was asked to modify the post and post again, so here goes... Okay, I need to get this off my chest because this encounter has been bothering me ever since it happened. I am on a solo trip right now, just enjoying some peace and quiet, meeting new people, and hearing interesting stories. That’s one of the best parts of traveling alone, right? But then I meet this one woman, and… wow. I don’t think I’ve ever been so repulsed by someone in my life. We were sitting by a river, just chatting about travel and life. She seemed pretty normal at first. But as we kept talking, the things she started revealing about herself were just… unreal. First, she told me she’s financially dependent on her mom because she hasn’t been able to find a job since finishing college. Okay, fine, not the worst thing in the world. But then she started talking about how she “manages” her lifestyle... by stringing men along. She straight-up admitted to befriending guys, keeping them hooked with the idea that something romantic might happen, and then using them for money. And get this, this trip she was on? Completely funded by one of these guys. She wasn’t even ashamed. In fact, she seemed proud of it, like it was some kind of clever scheme. But it gets worse. She started talking about a previous trip she went on, where she invited her ex-boyfriend along. When he started calling her out on her behaviour, she admitted to verbally and psychologically abusing him the entire time. She actually laughed about it while telling me, like it was some kind of accomplishment. I really feel bad for the poor guy. Then she casually mentioned how, during that same trip, she started talking to another guy behind her ex’s back, saying her ex “deserved to be cheated on.” This was after she told me her ex had once accused her of cheating... which, based on everything else she said, was clearly true. And then she had the nerve to say, “That guy really showed me what I didn’t want in life.” What really blew my mind was her view of relationships. She told me that, in her opinion, the perfect relationship is one where both people constantly make each other jealous. She actually thinks having people on the side is healthy because it keeps the main relationship “alive” by making both partners insecure. I was just sitting there, stunned, wondering how someone could genuinely think this is okay. As if all of this wasn’t enough, she kept calling her mom a “bitch” throughout our conversation. The same mom who’s still financially supporting her, by the way. I mean, how do you say that about the person who’s literally keeping you afloat? And the final straw for me... this is so random, but it really stuck with me... was when she bent down, scooped up some river water with her hands, and drank it. Like, what? Who even does that? I was already disgusted by everything she had said, but that just made it worse for some reason. I don’t know why, but this whole encounter left me feeling gross. She seemed so completely devoid of remorse or self-awareness, and it was clear she enjoyed the damage she caused. I’m honestly curious... have any of you ever met someone like this? How do people like her even sleep at night? I still can’t wrap my head around it.