What do I do about this guy?

So for context, this is my best friend's older cousin, y'know I really like him, he's handsome, sweet, he's a boxer, he's everything I want in a man but I'm scared I'm out of his league.

I'm scared to screw up, I want to be with him, I want to be his wife, but I'm terrified, what if I'm not good enough?

I want to be good enough, I want him to love me, but I don't want to be too late but im too scared to go for it.

What do I do about this guy?
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