this part is speculation, you know how
local gossip spreads like wildfire.

it was rumored that Soles met Blackburn
while Soles was his attorney. He was thought
to have been representing him in a court case.
When Blackburn could not pay his bill, he
offered to pay Soles with gay sex. This started
a gay affair between attorney and client.
But that is pure gossip and can't be
verified. But that's the local scuttlebutt.
So they were intimately familiar with each other
BEFORE the shooting took place.