This song by Thin Lizzy's frontman Phil Lynott is from his first solo
album. Although the song consists mainly of keyboards, drums and bass
guitar, it sounds very well on just an acoustic guitar.
These are the chords (and two little riffs) I use:

C: x-3-2-0-1-0----------------------------------------------------|
Cmaj7: x-3-2-0-0-0------------------------------------------------|
Am7: x-0-2-0-1-0 (sometimes during the verse I play: x-0-2-0-1-3)-|
Am7/G: 3-0-2-0-1-0------------------------------------------------|
F: 1-3-3-2-1-1----------------------------------------------------|
Dm: x-x-0-2-3-1---------------------------------------------------|
G7: 3-2-0-0-0-1---------------------------------------------------|
Am: x-0-2-2-1-0---------------------------------------------------|
E: 0-2-2-1-0-0----------------------------------------------------|
Am2: x-0-2-2-0-0--------------------------------------------------|
X: 0-3-3-2-0-0----------------------------------------------------| (I don't know the name of this chord)

riff 1:
e-|-----0-|
b-|-1-3---|
g-|-------|
d-|-------|
a-|-------|
e-|-------|

riff 2:
e-|---0-4-5-|
b-|-1-------|
g-|---------|
d-|---------|
a-|---------|
e-|---------|


Lyrics and chords:

The old covent garden
I remember only too well

[intro]
4x C (alter with Cmaj7)

C            Am7
The girl's a fool
              Am7/G
She broke the rule
             F
She hurt him hard
Dm   G7           C (alter with Cmaj7)
This time he will break down
C              Am7
She's lost his trust
           Am7/G
And so she must
       F
All is lost
Dm  G7         C      Am
The system has broke down
Dm E        Am
Romance has broke down
(riff 1)

F    G7     C        Am7
This boy is crackin' up
Dm   E       Am2   Am
This boy has broke down

C            Am7
She plays it hard
             Am7/G   F
She plays it tough
Dm         G7
But that's enough
            C (alter with Cmaj7)
For love is over
C               Am7               Am7/G   F
She's broke his heart and that is rough
Dm         G7                C  Am
But in the end you'll soon recover
Dm    E         Am
The romance is over
(riff 1)

F    G7     C        Am7
This boy is crackin' up
Dm   E       Am2   Am
This boy has broke down
(riff 1)
F    G7     C        Am7
This boy is crackin' up
Dm   E       Am2   Am
This boy has broke down

[Instrumental break with piano-solo]
C-Am7-Am7/G-F-Dm-G7-C-C-Am7--|Am7/G-F-Dm-E-Am-F-Dm-E-Am-(riff 1)
F-G7-C-Am7-------------------|Dm-E-Am-(riff 2)

[tempo slows down a bit]
          C           Am7
I've been spending my money
   Am7/G    F
In the old town
     Dm           G7
It's not the same honey
     C
When you're not around
          C           Am7
I've been spending my time
   Am7/G    F
In the old town
  Dm            G7
I sure miss you honey
    C           F
Now you're not around
    X           E
Now you're not around
     Am2 Am
This old town

[tempo back to normal]
C (alter with Cmaj7)
ola
3 x C (alter with Cmaj7)

[Instrumental break with trumpet-solo]
C-Am7-Am7/G-F-Dm-G7-C
ola
C-Am7-Am7/G-F-Dm-G7-C-C-E-Am
(riff 1)

F    G7     C        Am7
This boy is crackin' up
Dm   E       Am2   Am
This boy has broke down
(riff 1)
F    G7     C        Am7
This boy is crackin' up
Dm   E       Am2   Am
This boy has broke down
[Repeat until fade out]