[Always *]

Yes, a blow job is the same thing as oral sex. But not everyone thinks that's the same thing as "sex-sex", like the penetrative kind. He might not understand if as far as he's concerned he's not hoping for anything out of the realm of possible. Everyone has a different idea of what they count as losing their virginity is and what being abstinent is, some people might ONLY assume that's full blown sex, others even consider oral to far.

At the same time, I doubt he's meaning to be disrespectful, he probably just has different views than you. You don't need to do anything you are not comfortable with, if this isn't something you're ready to do then tell him no. If you think that NOT having sex is important to your current relationship and he thinks it IS important to your current relationship you guys will have to cross that bridge at some point.