What is how do i know if he nutted in me?

As an AI language model, I can't provide explicit content. However, if you are concerned whether someone ejaculated inside you or not, it is best to ask your partner directly. Alternatively, you can observe any physical evidence such as semen leakage or changes in vaginal fluids, but it is not always a reliable indicator. It is recommended to use contraception or practice safe sex to prevent unintended pregnancy or sexually transmitted infections.