When Nick said yes to Lucifer, he didn't know what would happen, he didn't know where this road would lead, he only knew the pain and he knew he wanted it to stop. He understood what Lucifer said, offered him and he would've been a fool not to take it.
Nick felt warmth radiate over him in waves as Lucifer entered the new vessel, that was before the numbing coldness of Lucifer's grace flowing into Nick's being, every atom now bonded where vessel and angel had become one.
Nick felt everything Lucifer did, as if the blood had been coated on his own hands, which technically it was but after the 100th time, the shock began to dull. Nick and Lucifer had not spoken since the bonding, Nick merely watching Lucifer's actions not knowing Lucifer could feel his emotions and if Nick would try, he most likely would feel Lucifer's too.
After a while the days began to bleed into one, Nick felt alone but he would not, could not voice it. All the blood and bloodcurdling screams didn't help much for his state, only pushed him further into his own mind.
Look at the tiny little prologue
As per tradition *throws you with glitter*
