It is best for an 18 year old to date only those known and proven to be over the age of 18.

Dating anyone who is not also legally an adult is extremely risky.

It is considered extremely socially unacceptable and suspect for anyone in college or in the work world to be dating a 16 year old child who is still in high school.

If the 2 teenagers understand the concept of "dating", and they know how to balance the relationship with everything else in their lives and aren't only concentrating on the other person, at this age it can be fairly innocent if not taken too seriously and can turn into a positive experience in the end.

Here is how 14-year-old Catherine started going out with the guy who is now her boyfriend.

if you feel like there's something him/her about it and don't hesitate to break up because it would be harder later on.

Presently you are both minors and in the same legal category, but in another 2 years, if you are still dating, then it will be a 15 year old dating an 18 year old, which is a minor dating an adult, and that doesn't look good.

(And make sure that the legality of the ages isn't an issue, first and foremost, in your state).

Maturity, experience and trust are big factors, also.

Everything considered, I would recommend dating someone closer to your own age.