хаха, я сейчас пропробал вводить "хе доес нот сее а гирл" .

Is this also used in the 'he is not seeing the girl'/'she is not his girlfriend' sense this is attributed to it in English or is this only the physical, line of sight seeing?

Russian native next to me says it can be both meanings.

Can it not also mean "He does not see a girl"? or should it specifically be "the" in this case?

how would you make девочку plural in this case? this keeps tripping me up.

He does not (sees) the girl, is wrong... Hmmm i get this wrong many times, any one can explain, i know its very simple but aaaah still :D

Why is, He DIDN'T see the girl, wrong?

Shouldn't "he didn't see the girl ' count?