Gorgeous song here. Lyrics are amazing if you really pay attention to them.
Play this with a capo at the second fret and it sounds pretty good.
Enjoy!!!

       G                                  C
When a single mom goes out on a date with somebody new
   D                                    C G
It always winds up feeling more like a job interview
                                 C
My momma used to wonder if she'd ever meet someone
             D                          C               G
Who wouldn't find out about me and then turn around and run
  G                              C
I met the man I call my dad when I was 5 years old
      D                               C             G
He took my mom out to a movie and for once I got to go
                             C
A few months later I remember lying there in bed
         D                              C                 G
I overheard him pop the question and I prayed that she'd say yes... And then

(1st Chorus)

Am                    D
All of a sudden oh it seemed so strange to me
       G                    C
How we went from somethings missing to a family
Am                         D                               Em
Looking back all I can say about all the things he did for me
   G                            C
Is I hope I'm at least half the dad that he didn't have to be

(Chords stay the same for next verse)

I met the girl who's now my wife about three years ago
We had the perfect marriage, but we wanted something more
Now here I stand surrounded by our family and friends
Crowded round the nursery window as they bring the baby in... And now

(2nd Chorus) - (Chords Stay same - Words Change)

All of a sudden oh it seemed so strange to me
How we've gone from somethings missing to a family
Looking through the glass I think about the man who's standing next to me
And I hope I'm at least half the dad that he didn't have to be

Tag

Am                   G
You know he didn't have to be