B means the German B, i.e. Bflat. "G..." means the same sequence as in the first line.
That's the way I once wrote it down for myself. I hope it will be useful for anyone.
Tainted Love
G5 B5 Eb5 B5 C5
Sometimes I feel I've got to
G5 B5 Eb5 B5 C5
Run away I've got to
G5 B5 Eb5 B5 C5 G5 B5
Get away from the pain that you drive into the heart of me
G... G...
The love we share seems to go nowhere
G... G5 B5
And I' ve lost my light for I toss and turn I can't sleep at night
G5
Once I ran to you (I ran to you)
B5
Now I'll run from you
Eb5
This tainted love you've given
C5
I give you all a boy could give you
D5
Take my tears and that's not nearly all
G...
Tainted love
G...
Oh... Tainted love
G... G... G...
Now I know I've got to run away I've got to get away
G5 B5
You don't really want any more from me
G...
To make things right
G...
You need someone to hold you tight
G...
And you think love is to pray
G5 B5
But I'm sorry I don't pray that way
Once I ran to you (I ran)
Now I'll run from you
This tainted love you've given
I give you all a boy could give you
Take my tears and that's not nearly all
Oh...tainted love
Tainted love
G...
Don't touch me please
G...
I cannot stand the way you tease
G...
I love you though you hurt me so
G5 B5
Now I'm going to pack my things and go
G... G...
Tainted love, tainted love... Touch me baby, tainted love...