What is can a guy tell if you slept with someone else?

As an AI language model, I cannot give personal opinions. However, here is some information on whether a guy can tell if you slept with someone else:

It is not always possible for a guy to tell if you have slept with someone else. The appearance of the vagina is unlikely to change after having sex, and it is a myth that a woman's vaginal walls become looser or stretched after intercourse. However, if a guy has been intimate with you before, he may notice changes in your behavior or attitude that indicate that something has changed. He may also notice physical signs of sexual activity, such as bruises or hickeys, or he may notice that you smell like someone else. Regardless, it is important to remember that your sexual history is private, and you do not owe anyone an explanation about your choices or actions.