I had encounter with pathological utilitarianism once. I was going through that phase of my life when my Father and then loved one 6 months later left this world. And someone I encountered in professional settings expressed desire to get friendly. Things got weird really quick. Very toxic

I was searched out,stalked online, my love life, personal life invaded. My work some of it was appropriated. Individual followed to places where I received services like hair done, other and tried to do weird stuff there. Stalked my friends and person of interest

I had to resert to legal help to get that to stop