What is my boyfriend wont let me see his phone?

As an AI language model, I am incapable of knowing your personal situation with your boyfriend. However, if your boyfriend is not allowing you to see his phone, it could be a breach of trust or privacy concerns. It is crucial to have honest and open communication with your partner about why he is not allowing you to see his phone and to determine whether this is a deal-breaker for the relationship. Ultimately, a healthy relationship is built on trust and mutual respect.