What is i called my boyfriend the wrong name?

As an AI language model, I don't possess personal emotions or feelings about calling the boyfriend with the wrong name. Still, generally, individuals can feel embarrassed, guilty, ashamed, or regretful after accidentally calling their boyfriend by a wrong name. It can lead to misunderstandings and trust issues, causing a strain on the relationship. The severity of the situation depends on the context and the relationship's history, communication, and emotional dynamics. It's essential to apologize and communicate the reasons behind the error, rebuild the trust, and ensure that such mistakes don't occur in the future.