Look I can't blame the dude. Suddenly your lover disappears off the face of the earth and you have no way to contact them or even hear about him. While struggling with it there was someone who was there supporting and comforting you for 5 years. You grew feelings for the dude and I can't blame you. I personally would've just stayed alone for a bit to actually mentally heal from it and at least keep trying to figure out what happened but you can't blame the dude. I think him being rude asf is wrong. I think he needs to sit down and talk to him. The new bf is mad but he needs to understand that they knew each other since birth and were in love. The guy getting shot and in a coma for 5 years is nobody's fault but the shooter. They just need to have a decent conversation and go their own ways. Let him get the closure he needs so he can start his own life