grammaticality - Comma in "Don't you wish your girlfriend was grammatically correct like me?"

I saw this:
"Don't you wish your girlfriend was grammatically correct like me?"

I'm wondering should it be:
"Don't you wish your girlfriend was grammatically correct​, like me?"

Answer

I found this comma guidance online:

Use a comma near the end of a sentence to separate contrasted coordinate elements or to indicate a distinct pause or shift.

• He was merely ignorant, not stupid.


• The chimpanzee seemed reflective, almost human.


• You're one of the senator's close friends, aren't you?


• The speaker seemed innocent, even gullible.

That guidance suggests that a comma might be appropriate. Moreover, the same website goes on to say:

Don't put a comma after the main clause when a dependent (subordinate) clause follows it (except for cases of extreme contrast).

• Incorrect: She was late for class, because her
  
  alarm clock was broken.




• Incorrect: The cat scratched at the door, while I was eating.




• Correct: She was still quite upset, although she had won the Oscar.
  (This comma use is correct because it is an example of extreme
  contrast.)

Assuming the quip is meant to imply that "your girlfriend" is not grammatically correct (unlike the speaker), that could be a case of "extreme contrast." However, judging by the omitted comma, maybe the contrast isn't so extreme after all.