jason (tj’s boss) died, everyone on tj’s ass cause he’s about to take the position so he hide, ian is anxious cause everything seems to be too quiet, jo noticed this and asked him to go on a camping trip with him, ian then went on a camping date with jo, after they’re back from the camp jo and ian without realizing starting to kinda live together in ian’s apartment, jo decorated ian’s place, cook for him, work across the street and went back to ian’s apartment, that chap (58) is where jo have his day off so he went back to visit his aunt (the place he’s currently staying before ian’s apartment)
Jo and Ian aren’t living together. They’re just always sleeping together so it looks that way.
TJ isn’t missing. After his and Ian’s old gang boss Jason died, TJ got into a car accident (an attempt at his life) at the end of season 1. TJ told Ian to stay away from the funeral since only gang members would be there, but Ian didn’t listen and showed up to show that he’s standing by TJ’s side (and also because he wants to kill whoever caused TJ’s accident). TJ was anxious because that puts Ian’s life in danger as well, but since Ian refuses to listen to him and his own life is in danger, basically left to go in hiding while he continues to do his gang stuff and to keep Ian safe.
Honestly I recommend rereading, the story is so good for rereads and summarizing everything would take ages sksk but to jog your memory of the current events:
Ian and TJ had their argument and wanted to talk it out but Jo interrupted. Jo saw that Ian was hooking up with other ppl and argued with him. Jo went to his family home, grabbed a gun and came back to confess. Ian was supposed to go to Jo's for a Christmas dinner but Jason died and Jamie orchestrated a car crash for TJ so Ian went to the hospital instead. Ian got protective and claimed he'll kill everyone. TJ got scared by that and the car crash (glad that Ian was not the target) and told Ian not to come to the funeral. Ian came to Jason's funeral anyways. TJ and Ian fucked and TJ tried to scare him off but Ian didn't budge so TJ vanished instead. Ian was looking for TJ but figured that he might only make the situation worse. Ian and Jo talked about TJ, Jo decided internally that he wants Ian and is determined. Jo took care of Ian since Ian was stressed, proposed a camping trip and left because his pride was hurt since he knew Ian's mind was on sth else. They went on the camping trip, Ian said he sees Jo now and wants to kiss him to check sth. They had sex, Ian had enough and passed out but Jo continued with his unconscious body and came on his face. Other than that Chris disappeared and both Jo and Ian were looking for him. Ian found Toby because of that and got reminded of his mother so he seeks her out. Jamie told Chris to get him Ian. TJ went to talk with the boss. The boss' daughter tried to get TJ back and he didn't want to so she asked her dad to kill TJ.

Someone remind me why Ian and Jo are living tgt and why tj is missing? Or just gimmie a tldr od the whole story