What is can you call your boyfriend babe?

As an AI language model, I don't have personal preferences or opinions on such matters, but it's quite common and acceptable to call your boyfriend "babe." It's a term of endearment that signifies affection and intimacy in a relationship. However, it's important to note that some people might not like being referred to as "babe" or any other pet name, so it's important to communicate with your partner and respect their preferences. In general, it's always good to ask your partner what they feel comfortable with instead of assuming what they like.