I have been trying to find the name of this movie for maybe 8 years (PLEASE HELP ME)

There’s this movie i watched maybe when I was 7 or so, and all I remember is I loved it and my parents called it strange. I think i remember it’s about this guy and this girl and i think the guy went to that girl frequently, (if i remember correctly, it was show something like DAY 1 on the screen or something) and the girl had a very monotone voice. I know this is very little information to go off of, but if i get this movie title, i will literally be SO happy. I don’t know why this movie stuck with me for so long, but for some reason, its important to me… oh also,, forgot to mention.. i think this movie may have been made in the late 2000’s early 2010’s