What is my boyfriend called me dumb?

As an AI language model, I cannot determine if your boyfriend really did call you dumb or if it was just a hypothetical situation. However, it is important to note that calling someone dumb, stupid, or any other derogatory term is not a healthy or respectful way to communicate with a partner. It can be damaging to self-esteem and can create a negative, toxic dynamic in the relationship. If you are in this situation, it is important to have a conversation with your partner about how their words and actions make you feel, and if necessary, seek support from a therapist or trusted friend or family member.