What to do

Auyana

So Im 17 turning 18 in December snd i have Boyfriend who i started dating recently and known for about 4 years now who sadly lived across the country that turned 21 in April. Now my question is how can I bring this up to my mom who doesnt rlly like me dating online and is LDR bc you never know what they’re actually doing that part I’m fine with but I’m more concerned snd worried about our age difference. I want to tell her when I turn 18 both my bf snd i agreed on this bc he also wants her to like snd accept him. And since hes not born in America he Cant rlly just simply come here too😔 so can anyone tell me on what I can maybe do or give advise. I REALLY like this guy, I’ve never liked a guy this much before snd never been treated this well and i really want us to stay together.