Spoilers for people who aren't up to date:
Manny's the drug dealer serial killer, cause Manny's brother was killed by drug dealers Manny was in a vulnerable place after his brother's death and the reverend listened to Manny's confession and manipulated Manny into doing "God's work by "killing "sinners" (drug dealers). Manny works for the reverend and has kind of lost his mind as a result.
Manny is self destructive and full of self-loathing cause he blames himself for his brother's death. He uses sexual intercourse with other people as a form of self harm, and engages with the reverend out of desperation and self hatred.
The reverend is using Manny for his own gain, and I'm guessing he likes the feeling of power he has over him.
Manny sleeps with a lot of people, and it isn't until his relationship with Sean becomes something more than sex that Manny starts to break out of his cycle.
It's all pretty straight forward when reading, and I like the scenes where Sean calls Manny a "good person" cause Sean has no idea what Manny is hiding.
The guilt and self-loathing is fun to read, and Manny is an interesting main character in a genre where MC personalities can be kind of stale.
To add on:
Manny is sleeping with multiple people as self destructive behaviour. He probably knows it isn't healthy and "makes no sense", which is why it's a dangerous form of self harm.
It is chaotic, and likely hurtful, and this self-sabotaging behaviour is likely because Manny feels like he doesn't deserve anything secure or better.
Secondly, Manny was r*ped by the reverend in one of the chapters and was not lucid enough to have given consent anyway. It could be argued that other times Manny "engaged" with the reverend was also SA, because he was under duress and may not have been sound of mind enough to give consent.
His relationship with Sean is slowly changing, but it is new and raw (+Sean has a whole other set of issues)

Was going decent but then chapter 31 hit and now wtf is going on…. Am I missing something…?