Are these grammatically correct?

Question

What made you first realize you were in love?

What made you first realize were you in love?

Answer 1

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This is an embedded question. When you have a question with two clauses like this one, you only invert the subject and the verb in the first one.

"What MADE YOU first realize"-- the verb comes before the subject, which makes it a question.

"you were in love"- the subject is before the verb in normal sequence.

Similarly:

Can you tell me what the time is?

Do you know where he went?

Answer 2

The correct sentence is " What made you first realize that you were in love?".

Answer 3

Your second option is grammatically incorrect. 

Answer 4

This is correct...What made you first realize you were in love?

Answer 5

The first one is. Add the word "that" after realize.