Is an 18 year old allowed to date a 16?

While in many circumstances it is perfectly legal for an adult to have consensual sexual contact or intercourse with a 16-year-old, there are some circumstances where it is not. Most often, it comes down to the nature of the relationship between the two individuals.

Is it normal for a 16 year old to date a 18 year old?

Its perfectly legal. First of all, there are no laws governing who people can date. There ARE laws governing who people can have sex with. (If you think that dating someone is just the same thing as having sex with them, then you are too young