You have yet to finish puberty
And yet you think you're in a relationship
Have you kissed? Have you done anything that would make her dad mad? Have you gone on any dates? Have you done ANYTHING significant?
If not, you aren't in a relationship, you're two kids who are trying to grow up faster than you should. Save the relationship stuff for being a big boy, cause no matter what your parents say, you're not there yet lol. Send her love notes and stupid stuff like that, I'm sure everyone here on this forum has done it, but "we're in a relationship and we're both 12." Isn't... That's not a relationship lol.