What's the purpose of my boyfriend showing me his chat information with other girls?

Maybe he didn't want to hide anything from you. When two people are together, they have to be honest with each other, right? But it is also possible that you are demonstrating, as if to say that you are the same without you, and there are still many people who like him. This is my humble opinion, hehe ... forget it, anyway, you two are getting along well now!