Age difference. 23 year old male to date a 18 year female?

Anonymous
I am a 23 year old (turned it 1 month ago) and I like I girl who is 18.

Very surprisingly she acts like she's 20 or 21, she has told me that the majority of people think she is older because she is definitely mature.

So my question is, me who just turned 23 is that an objectionable thing to date an 18 year old girl who is mature enough to be a 20 or 21 year old?. Or is she 18 being too young? or does age matter?
No, too much age difference.
Age difference doesn't matter.
She's mature for an 18 year old so in this case it's okay.
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Age difference. 23 year old male to date a 18 year female?
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