So this is the way I play this song from what i have figured out.

For the intro part the "He said he loved" me part I play a shortened version of the Bm 
chord which is like this:

e|--2---|           e|--2---|
B|--3---|           B|--3---|
G|--4---|     or    G|------|
D|------|           D|------|
A|------|           A|------|
E|------|           E|------|

The rhythm of this goes something like this:

e|--x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-2222---|
B|--x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-3333---|
G|--x-x-4-4-x-x-4-4-x-x-4-4-x-x-4-4-x-x-4-4-x-x-4-4-x-4444---|
D|-----------------------------------------------------------|
A|-----------------------------------------------------------|
E|-----------------------------------------------------------|

                            or

e|--x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-2222---|
B|--x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-3333---|
G|-----------------------------------------------------------|
D|-----------------------------------------------------------|
A|-----------------------------------------------------------|
E|-----------------------------------------------------------|

Then the melody after that is this:

e|--------------------|
B|--------------------|
G|--11-11-11------9---| x4
D|-----------9-12-----|
A|--------------------|

Verse has no guitar then repeats the melody above 4 times again


The "mams and prams" part i am a bit unsure of and i dont think its guitar but i think 
to play it on guitar it would be something like this:

e|--7--9---10---|
B|--9--10--12---|
G|--9--11--12---|
D|--------------|
A|--------------|

Then back to the "he said he loved me" part:

e|--x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-2222---|
B|--x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-3333---|
G|--x-x-4-4-x-x-4-4-x-x-4-4-x-x-4-4-x-x-4-4-x-x-4-4-x-4444---|
D|-----------------------------------------------------------|
A|-----------------------------------------------------------|
E|-----------------------------------------------------------|

                            or

e|--x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2-x-2222---|
B|--x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3-x-3333---|
G|-----------------------------------------------------------|
D|-----------------------------------------------------------|
A|-----------------------------------------------------------|
E|-----------------------------------------------------------|

But the last time through the cycle of the you need to stop as the part shows below:

e|--x-x-2-2-x-x-2-2-x-x-2-2-x-x-2-2--|
B|--x-x-3-3-x-x-3-3-x-x-3-3-x-x-3-3--|
G|-----------------------------------|
D|-----------------------------------|
A|-----------------------------------|
E|-----------------------------------|

Then repeat the melody as shown before:

e|--------------------|
B|--------------------|
G|--11-11-11------9---| x4
D|-----------9-12-----|
A|--------------------|

Then it goes into the other melody which might be on synth or keyboard but here it is:

e|----------------------------------------------------|
B|-----10--------10--------10-------------------------|
G|--------11-9------11-9------11-9----11-9------------| x2
D|--9-9---------9---------9---------9------12-11-9----|
A|----------------------------------------------------|
E|----------------------------------------------------|

At the same time this is played:

e|-222222222222222222222222-5555-7777----|
B|-333333333333333333333333-7777-9999----|
G|-444444444444444444444444-7777-9999----| x2
D|-444444444444444444444444-7777-9999----|
A|-222222222222222222222222-5555-7777----|
E|---------------------------------------|

Then back to verse with no guitar

Then the "mams and prams" part:

e|--7--9---10---|
B|--9--10--12---|
G|--9--11--12---|
D|--------------|
A|--------------|

Then its the last time the first melody is played:

e|--------------------|
B|--------------------|
G|--11-11-11------9---| I think this is played 17 times
D|-----------9-12-----|
A|--------------------|

But this time through the melody these chords are played as before:

e|-222222222222222222222222-5555-7777----|
B|-333333333333333333333333-7777-9999----|
G|-444444444444444444444444-7777-9999----| x4
D|-444444444444444444444444-7777-9999----|
A|-222222222222222222222222-5555-7777----|
E|---------------------------------------|

Then into the synth melody for the ending:

e|----------------------------------------------------|
B|-----10--------10--------10-------------------------|
G|--------11-9------11-9------11-9----11-9------------|
D|--9-9---------9---------9---------9------12-11-9----|
A|----------------------------------------------------|
E|----------------------------------------------------|

But this time it has a different chord pattern which is this:

e|-222222222222222222222222-5555-4444----|           e|--2--|
B|-333333333333333333333333-7777-5555----|           B|--3--|
G|-444444444444444444444444-7777-6666----| End on Bm G|--4--|
D|-444444444444444444444444-7777-6666----|           D|--4--|
A|-222222222222222222222222-5555-4444----|           A|--2--|
E|---------------------------------------|           E|-----|