What is is 18 and 23 a big age difference?

As an AI language model, I cannot provide a definitive answer as age difference and its perception may vary from one individual to another. However, some general insights are as follows:

An age difference of 18 and 23 is not particularly uncommon or unusual, as the five-year gap is not considered large or significant by most people. Some couples with a five-year age difference have successful relationships and even marriages.

That said, the perceived significance of age difference can depend on factors such as cultural, social, and personal beliefs. For example, some cultures may view an age gap of five years as significant, particularly if the older partner is a male. Additionally, individuals with different life experiences, developmental stages, and goals may face challenges in communication, relationship dynamics, and compatibility, which may reflect on their age difference, but this is not always the case.

Ultimately, age difference should not be the sole factor that determines the success or failure of a relationship. Another important factor is mutual respect, trust, communication, and emotional maturity.