#today on...

Bolded Italics for some notable lyrics.

We stayed up all night Talking to each other, whispers under covers You told me your life Wasn't always easy, I said I know the feeling I told you all about the scar on my shoulder And you told me you're terrified of getting older We stayed up all night The first night of a million more 'cause I'm gonna love you, love you inside out I'm gonna love you, love you inside out Nothing you say is gonna scare me now Still gonna love you, love you inside out

Hudson Williams has a fairly notable scar on his shoulder... such that it's a pretty visible part of Shane... so it's like a slam dunk of a reference.

We laughed 'til we cried Made fun of each other, lost in one another You held me so tight And it felt like I was home, just the two of us alone

Made fun of each other--the whole banter back and forth with each other.

Two of us alone--a cute nod towards Shane inviting Ilya to come to the cottage ('Be completely alone... together').

You said you don't wanna end up like your parents I said, "Don't you worry, I'm not gonna let us"

Ilya doesn't want to succumb to depression like his mother... nor does he want to be like his father.

So what do you say, babe? 'Cause I wanna know, oh Can I be there babe Through your highs and lows? Yeah

Just a good reference to Shane wanting to be their for Ilya in an emotional matter/something deeper.