What is a good age gap in dating?

I am 17 and i am engaged to a 24 years old guy is that a good age gap or is that too much i mean i will be turning 18 soon I don't think it is bad but some people think it is weird and has asked me why don't you get married to a guy your age and i usually get embarrassed and tbh I don't know why, just wanted to see and find out other peoples opinions on this

What is a good age gap in dating?
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