Just would like to chat with someone

Hi, I am new on Reddit. I currently have issues with my partner since he likes to have conversations with other women and he says that it is not cheating. I honestly doesn't like it and he keeps doing it. He likes to talk to them about topics I think that are personal, things you would talk with close friends. He thinks that cheating just involves having sexual encounters with another women, but I do think there are other ways of cheating. Don't know I anyone around here has lived something similar.