Sonny scares me too! His only saving grace is having Carly in the room with him, because I truly think it would be the only time he wouldn't be violent. But, what he said to Alexis the other day was awesome, quivering lip and all.
Now, the following is pure pure speculation, since I am the queen of speculation with this show. A friend of mine had mentioned that maybe, JUST MAYBE, Sonny and Jason are still allies, and they are just pretending to be having this trouble right now, so that Faith, her stockings, and her cronies would think that Sonny is weak because him and Jason are having trouble. What led me to consider this idea was how the other day, Jason and Sonny were discussing the 'mob' situations in Jason's p-house, and they were almost discussing it civilly...that is until Courtney barged in and Sonny went back to being all, "You, shut up!!!"
Again, just specualtion, since I prefer to remain Spoiler free.