Responses
This person doesn't know what he/she is talking about. Those spoilers are wrong. Don't judge a story based off this guy's comments. I posted the full novel spoilers so read that and see if its your cup of tea instead.
http://www.mangago.zone/home/mangatopic/4234313/

Guys... where do you find all this information? I feel so sad for Edd and disappointed in Glenn. I am really heartbroken over a story. I really didn't want it to be one where abuse and miscommunication were the premise. But I guess we can't have a plot without that huh? I will really take this manhwa out of my list and let time flow. Perhaps I will forget and one day when I come back it will be finished, so I can at least read it having hope.
SPOILER AHEAD
Although they are more like assumptions and pieces of information obtained from the comments and my own reasoning:
Maybe the reason why Glenn broke up with him was because he felt like he was only ruining his life by staying by his side. Since he lost his job as a bodyguard after McQueen became famous due to the movie's success. Perhaps, Edd's distress and unstable emotional state due to the lost of his job and the prejudice he had to deal with made him agree on this easily or even suggest it.
If he went to Lancer was because he had no other choice but being an scort. Probably because he was convinced it paid well and was a good way to get rid of the debt.
However, people are saying that Chang requests him several times and abuses his physical integrity. Rapes him.
Because he was interested in him since the beginning, and even went as far as using Edd's body to the point of exhaustion and left him unconscious in front of McQueen's house. Now, that is something I hope won't happen.
But what do I know? The ingredients to an alluring plot are meant to make you suffer to make it addictive. How will Edd react when he's gained consciousness? What will McQueen do?
Probably everyone at work will be pestering on McQueen. Because he looks so different and has been drinking while watching movies way too much. And Ho! Surprise! He can't get it up unless he thinks about Edd? Maybe has been suspiciously sleeping around with any Asian guy, nice built, quiet with a soft voice ?
Will this end with Edd in a hospital, McQueen wating in anguish while holding his hand, Chang deciding to retire and saying bitterly "the debt has been paid since long ago", some of his past co workers bringing flowers and feeling guilty to death and then... silence? Until he wakes up, sees McQueen and softly smiles while McQueen says crying "I am so sorry"?
I doubt it. But I don't want to know anymore.