Headcannon that postcannon Charles doesnt like leaving Edwin alone for long streches of time.
You know the way he did in the beggining of the show, leaving Edwin alone so that Charles could be with Crystal or just giving Edwin space to be with other people(Monty or Niko). I think post-Hell Charles Rowland would feel uneasy about not having Edwin in his line of sight while at the same time not wanting to make a big deal out of it.
Like how in the last episode Edwin is alone and Charles leaves others to pack so he could check up on Edwin, that sort of thing. Or how he was hessitent to follow Crystals plan at first becouse he has to rescue(see) Edwin ( to me it also looks like Charles was so busy rushing to Edwin he didnt noitice Nikos body but that might just be me)
Anyways i think it would be a fun direction to take Charles's characther in. Considering in s1 he is already weary of Edwin spending time with the Cat King, youd get that whole jealousy thing but doubled and mixed in with his feeling of inadequacy as the brawn. But also s1 establishes Charles as being at least partially insecure about their bond: having to correct Edwin whenever Edwin says how Charles would move on quickly and constanty seeking reassurment from edwin about their friendship (ep 1 when he asks what would happen if death came, ep 4 with his fight with the night nurse, seeing Brad and Hunter the best friends as him and Edwin)
And then you also have the reversal of how Edwin was jealous of Charles spending lots of times with Crystal and now Charles is protesting every second Edwin isnt with him. And ofcourse Charles does it from a place of fear and love but Edwin would maybe interpret it the wrong way, who knows?
And, from what the writers have told us, Edwin in s2 spent at least some amount of time flirting with other men (hopefully without Charles lurking in the background) and from what we know from that one cameo Jayden and George did, there was a lot of tension between the boys...
Now im not a writer i didnt write the s2 script or anything, im not saying this is what would have happened in s2 but.... i think the tension might have come from that. From Charles seeing Hell as a traumatic expirience and his PTSD manifesting as his insistence on Edwin not leaving his side, Charles's insecurities and his fear of losing Edwin being at an all time high. While Edwin, who has learnd how to forget Hell, is acting as if nothing happened at all, exploring his sexuality and making new friends in the process.
It would make Charles confront all of the skeletons he's been hiding in the closet but also it would ask the simple question of why is Charles so insecure in their friendship? Why is he constantly mentioning them being best mates? Why does he need it so much? Why is he constantly searching from reassurences that they are best friends?
And for more angst, from Edwins point of view he is doing everything Charles wanted him to do in s1. Hes accepting and letting the dead boy detectives workplace to grow and change, he is being more open and friendlier, he is encouraging Charles friendship/relationship with Crystal and he is no longer playing trauma Olympics at the drop of a hat. So why is Charles so mad? Hes working through his shame and his supiriority complex, hes growing as a person and Charles is still stuck at the staircase.
