Is it okay for a guy to ask for a bj?

So tonight I was making out with this guy and it was going well till he asked for a bj. Now he didn't come out and say 'give me a blowjob' he said 'why don't you... You know..' Then looked down at his crotch. At this point I was shocked he asked because I didn't think we'd jump into that, that soon so I was just staring at him, he assumed I was confused by what he was saying so he gently pushed my head down but I pulled away when my head got to his should level. I told him he killed the mood and a guy should never ask, it's supposed to just happen. 
I don't know, I just feel like not only is it slightly disrespectful to assume but it's also a big turn off.

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