Why doesn't the speaker want to tell the dead man who he is with?

it is the dead man's "sweetheart."
he doesn't want to rub it in that the dead man cannot date anymore.
he is scared because he is not used to talking to dead people.
none of these

"is my team ploughing,
that i was used to drive
and hear the harness jingle
when i was man alive? "
ay, the horses trample,
the harness jingles now;
no change though you lie under
the land you used to plough.
"is football playing
along the river shore,
with lads to chase the leather,
now i stand up no more? "
ay, the ball is flying,
the lads play heart and soul;
the goal stands up, the keeper
stands up to keep the goal.
"is my girl happy,
that i thought hard to leave,
and has she tired of weeping
as she lies down at eve? "
ay, she lies down lightly,
she lies not down to weep:
your girl is well contented.
be still, my lad, and sleep.
"is my friend hearty,
now i am thin and pine,
and has he found to sleep in
a better bed than mine? "
yes, lad, i lie easy,
i lie as lads would choose;
i cheer a dead man's sweetheart,
never ask me whose.