Is it weird for a 20 year old guy to date an 17 year old girl?

Mr-Kabuki
So i asked a girl out recently and while texting her i found out she was 17 years old. i dont know why i assumed she is my age but found out she's 17. im also turnign 21 in a month or so. is this age gap weird? from where i live, the legal age of consent is 18. is she too young? im just concerned of being seen as creepy?
Updates
+1 y
i actually just checked and the age of consent is 16. i just assumed it was 18 cause thats when your considered an adult.
Is it weird for a 20 year old guy to date an 17 year old girl?
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