Girlfriend doesnt want "anymore"...?

We've been dating 8 months...shes givin me a hj and ive stayed on the outside of her clothes waist down...she doesnt want to go to the next step because she thinks its gross (a bj). Sounds stupid but what do i do...ik she wont have sex and i dont want to have sex right now...idk what to do..i wouldnt leave her...but...idk...help please..