He's right. I tell that to any man, never let a bih take the lead in a relationship for any behavior.
I was dating a girl that cheated on me. She wanted to still be with me. I have never cheated in a relationship so I thought about cheating back but then I thought if I cheat it's not cuz I really wanted to it's because I was following her lead.
I dropped her azz that day, blocked her numbers, email social media etc.
Unless it's a positive habit, never follow the lead of a toxic bih