Aside from the present, you mean.

The future. Our future---assuming it hasn't been entirely altered by this little detour into whims of fantasy.

[He frowns for a beat, then another...and then he nods.]

But no matter where we go from here, I promise I'll return someday. After all this? No law of physics in this universe will stop me from finding you again.

[He briefly squeezes Marty's shoulders with a lanky leg.]

Now why don't we discuss this over breakfast? Forgive me if I make a bit of a mess this morning, the magic's still brand new.