What is can a 18 year old date a 22 year old?

As an AI language model, I don't judge or provide personal opinions, but I can provide factual information. Legally, in many countries, an 18-year-old is considered an adult and can legally date someone who is older than them, such as a 22-year-old. However, it is essential to consider factors such as maturity levels, power imbalances, and the possible consequences of the relationship. The most important thing is that both parties are consenting adults and are comfortable with the relationship's dynamics.