I know, you were a perfect child, you raised perfect children. Never mad a mistake. Never had or tried to have sex when you were a teen.
We put the sex offender laws in place to protect the public from seriously ill people, not to protect us from a 17 year old that had consensual sex with his almost 16 year old girl friend.
In the case of a 16 and 17 or a 17 and 16 no laws would be broken... The age of Consent in MD is 16 (with a few exceptions). Here are the Maryland Age of Consent laws....
http://www.peoples-law.org/age-consent
In this case a 18 year old can have sex with a 15 year old.
A 19 year old can have sex with a 16 year old, 17 year old, 18 year old....
There are also Romeo and Julliet laws
For example, under Maryland's laws, a 19-year-old cannot be prosecuted for having sex with a 16-year-old, and a 15-year-old cannot be prosecuted for having sex with a 13-year-old. (Md. Ann. [Crim.] Code §§ 3-304, 3-306, 3-307.)
BELOW...
A person who engages in a sexual act (oral and anal sex and genital penetration) with a child under the age of 14 when the defendant at least four years older than the victim commits the crime of sexual offense in the second degree in Maryland. (Md. Ann. [Crim.] Code §§ 3-301, 3-306, 3-312.)
Finally, a person commits the crime of third degree sexual offense, the least serious statutory rape charge, by:
engaging in intercourse or a sexual act with a child age 14 or 15 when the defendant is over the age of 21, or
engaging in sexual contact (genital touching short of penetration) with a child under the age of 14 when the defendant is at least four years older than the child.
(Md. Ann. [Crim.] Code §§ 3-301, 3-307.)