need some help & advice!!

i recently got a new boyfriend and things are going really well. but i feel like if the relationship lasts, i’ll need to tell my dad and grandpa (they’re my guardians). the thing is, my boyfriend is 2 years older than me and doesn’t even live in my town. we met over the internet, started talking, and then we met up (without my dad knowing but my friends were with me). he then later asked me to be his girlfriend. but how do i tell my dad and grandpa that i met a guy over the internet and am now dating him even though he’s an hour away? please help i need it💕AND YES before anyone starts asking: yes, he’s trustworthy and not a creep so please don’t say anything like that lmao