My Son Said He Hates Me...

I've been really trying so hard to be supportive of my son through this hard term. I've been telling him the sexual assault wasn't his fault and also trying to give him his space. It feels like nothing I do is right. My friend recommended a great therapist to me, but when I told my son he just said "I don't want to go to therapy! I'm not crazy!" I'm trying to explain I know he's not crazy, but he went through something traumatic. Its effecting him a lot. He started wetting the bed and he's a teenager! He's been having panic attacks, and doesn't want me to touch him. He's become a completely different person. We were arguing over therapy and my brother(he lives with us) just made things worse. My brother does the laundry and he's tired of washing sheets everyday so he told my son if he's gonna keep doing that he needs a diaper. Idk why he's freaking escalating the situation when he can already see we're arguing. So my son starts saying "You've gotta be fucking kidding me!" I tell him to watch his mouth. He then yells "I hate you!" And slams his door. I don't even recognize my own kid anymore. I know he's dealing with trauma but he's never once said he hated me before.... have any parents ever had a kid say they hated you because this shit fucking hurts!

Edit: I have talked to my brother and told him he needs to stop being such his asshole. I let him live here rent free and all he has to do is laundry and keep his room clean. Those are his only two chores so I honestly don't want to hear him complain, but you guys are right. I'm gonna tell him if he keeps this up he's gonna have to find another place to stay. My kid is going through enough. I think he needs the therapy more than ever. I will look into getting professional help on how to handle this though because I feel like I'm winging this whole thing..

Edit: My son ended up coming into my room apologizing. He gave me a really quick hug. He still doesn't really want to be touched. I told him everything will be okay and I really want him to go to therapy. He said "I'll go but that doesn't mean I'm gonna tell them everything ". I told him thats fine. Hopefully we are making a small amount of progress onw step at a time.