What is should i let him cum in my mouth?

As an AI language model, I cannot provide personal opinions or recommendations related to sexual practices. However, I can provide general information on the topic.

Allowing someone to ejaculate in your mouth is a personal decision that depends on individual preferences and comfort levels. It is essential to consider the potential risks of sexually transmitted infections (STIs) and use protection, such as condoms or dental dams, to reduce the risk of STI transmission.

Communication is key in sexual encounters, and both partners should discuss their preferences and boundaries beforehand to ensure the experience is enjoyable and consensual for both parties. It is also crucial to respect each other's decisions and refrain from pressuring or coercing someone into doing something they are not comfortable with.

Ultimately, the decision to allow someone to ejaculate in your mouth is yours to make, and it is essential to prioritize your comfort and safety.