I'm 17 years old and I like a 27 year old guy

Hi I'm 17 years old I'm turning 18 soon I really like a 27 year old guy I have known for awhile he plays lawn bowls and he knows a lot of the people I know my parents know who he is but don't know I like him the guy I like does not even know I like him but there is a 10 year age gap between us but to me age is just a number he is a really nice caring guy

well there is a 9 year age gap between my mum and her new partner

and there is a 7 year age gap between my dad and his new partner

what does everyone think I should do as I don't know how he would feel about all of this to me age is just a number but what does very one else think I should do