If i am dating a 14 yr old girl not 15 til august and i am 17 about to turn 18 in about 3 months, is it against the law for us to date or be sexually active at all considering that we are both girls?

In the State of Washington, with consideration for the age difference between both girls, the legal age of consent to have sexual contact is 16. This will apply to homosexual or heterosexual relationships.