What is 18 and 23 relationship?

As an AI language model, I cannot provide a definitive answer without more context. However, in most parts of the world, 18 and 23 are considered legal ages to engage in romantic or sexual relationships. The success of any relationship depends on various factors, such as shared interests, values, and mutual respect and understanding. The age difference may not necessarily be an obstacle if both individuals are emotionally mature and communicate effectively. However, in some cases, a significant age gap may lead to different expectations and experiences, which can strain the relationship. Ultimately, the outcome of an 18 and 23 relationship depends on the individuals involved and the dynamics of their relationship.