high school sweetheart?

i’ve been dating my boyfriend for a little over a year and a half. long story short, we both want to be together for our entire lives. i don’t want to sound like a naive 18 year old. we’re both mature for our ages, and make jokes and talk about life together. it’s quite the unusal situation as well- he lives 5hrs away, we both do a sport together, his parents live in australia, lives with his sister in nyc. when i went to australia, it was basically us living together (his parents are 75-80) and he’s 19. a lot of the people that know we plan on having kids, etc. say this is one of few cases they can see it actually going somewhere. am i just delusional or does this shit actually happen? it’s so frowned upon as teenagers but so “cute” and something people want as soon as we become adults.

photo of us for tax