AWGear 
"[@royalbardofequestria93":](/images/2038489#comment_8640513
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I don't know how cannon it is, as it's merely just a theory based on Shinodage's artstyle, but it's likely that Jet got Delta drunk just so he could make her pregnant.
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Shinodage draws really detailed and amazing facial impressions, and in this comic as well as it's older form, Delta is the only one who has mouth suggesting being heavily intoxicated. The "drunk particles" also seem to be centred around her head, as there are none of them above Jet's head.
From that you can assume that he was at least much less drunk than Delta (or alternatively just doesn't show off the effects of alcohol as well).
Also, we can see the moment where the idea seems to appear in Jet's mind, as he is the one suggesting getting drinks.
Then again, it's just a theory.
The Devil's Advocate
I don't know how cannon it is, as it's merely just a theory based on Shinodage's artstyle, but it's likely that Jet got Delta drunk just so he could make her pregnant.
!
!
Shinodage draws really detailed and amazing facial impressions, and in this comic as well as it's older form, Delta is the only one who has mouth suggesting being heavily intoxicated. The "drunk particles" also seem to be centred around her head, as there are none of them above Jet's head.
Also, we can see the moment where the idea seems to appear in Jet's mind, as he is the one suggesting getting drinks.
![full](https://derpicdn.net/img/view/2019/8/13/2116705.png
Then again, it's just a theory.