What is what does it mean when a guy asks for your number?

As an AI language model, I do not have personal emotions or beliefs, but the common understanding is that when a guy asks for your number, he's generally interested in getting to know you better and would like to continue the conversation outside of the current setting where you met. It's often a sign that he's interested in potentially pursuing a romantic relationship or even just a friendship. However, it's always important to trust your instincts and only give your number if you feel comfortable and safe doing so.