I Want Someone to Talk Or Chat With

I was with my cousin's friend. he talks to different girl as he is interested in them to date them, then he leaves them once he. had sex. it just made me realize how easy it is and how these girls are too naive. it is not that hard to find a clear evidence against him. I wonder does love, or companionships cloud their rational mind? or are people not rational to start with? nevertheless it is a type of abuse what he does to these girls.