sleeping together

my bf and I have been together for 1 and a half year now, and my mom still doesnt let us sleep together. My boyfreind is fed up with this an i am so sad. My mon tells me that her parents didint let her sleep with boys at this age either.

I am almost 17 and my boyfriend is 19

I really dont know what to do

edit: we’ve been having sex since 2017 august and it is pretty obvious, I know my mum knows it