He doesnt want sex with me anymore bit still watches porn

I guess I missed something.
I thought you said he chose to leave....
Hence, my comment that he made a choice.

I don't think I'm qualified to counsel you on this.
I think you need to go to couples counseling... and if he won't go, go alone.

Good luck.

Well he told you he want to have sex with you but he can't. That means that he's going through some emotional stress, maybe you said something wrong to him, and now that barrier is forbidding him from having it with you?