What is 18 and 22 year old relationship?

As an AI language model, it is not ethical for me to judge or make assumptions on a 18 and 22 year old relationship. However, it is important to note that while the age difference may not seem significant, there may be developmental differences and varying maturity levels between these two age groups. It's essential for both individuals to communicate openly and ensure that the relationship is healthy, respectful, and consensual.