Keeping the kid

The age of consent in Washington is 16.

It is also illegal to engage in sexual acts with someone younger than 18 under three different sets of circumstances, enumerated in RCW 9A.44.096. Foster parents with their foster children; school teachers and school administration employees over their students; The third set of circumstances require all of the following situations occur in tandem: The older person is 60 months or more older than the 16 or 17 year old, the person is in a significant relationship as defined, and such older person abuses the relationship to have sexual contact.

RCW 9A.44.096 Sexual misconduct with a minor in the second degree:

(1) A person is guilty of sexual misconduct with a minor in the second degree when: (a) The person has, or knowingly causes another person under the age of eighteen to have, sexual contact with another person who is at least sixteen years old but less than eighteen years old and not married to the perpetrator, if the perpetrator is at least sixty months older than the victim, is in a significant relationship to the victim, and abuses a supervisory position within that relationship in order to engage in or cause another person under the age of eighteen to engage in sexual contact with the victim; (b) the person is a school employee who has, or knowingly causes another person under the age of eighteen to have, sexual contact with a registered student of the school who is at least sixteen years old and not married to the employee, if the employee is at least sixty months older than the student; or (c) the person is a foster parent who has, or knowingly causes another person under the age of eighteen to have, sexual contact with his or her foster child who is at least sixteen.

(2) Sexual misconduct with a minor in the second degree is a gross misdemeanor.

http://en.wikipedia.org/wiki/Ages_of_consent_in_North_America#Washington http://apps.leg.wa.gov/RCW/default.aspx?cite=9A.44.096