First...
Don't pay this too much heed. If there was any real reading, they'd have seen that there were no drugs. The alcohol probably caused the sleepwalking - something that's been found to be pretty much a solid cause in research. The bringing up the ocean was just you engaged in your dream. Being defensive later....well it's not unheard of for people to get defensive because all of a sudden some inner part of them is being shown to the waking world. Don't be too concerned, embrace the openness and accept it. After all, it -was- your boyfriend that saw it, not some stranger on the street...

Your first dream follows a pretty standard symbolism for being overwhelmed. That it was at the beach and it was the ocean can on the surface be simply a reflection that you're living at the beach and it's being there that is causing you this stress. Deeper, though, is the significance that water is symbolic for emotions. What emotions have been building up (surging) within you? Do you feel that these emotions are becoming an overwhelming problem?

The first thing I want to say about the next dream is this :: death is -never- about actually dying when it's in your dreams. The second thing is this :: -every- character in your dreams, especially the 'strangers' you happen upon, are parts of your own psyche. That you were going around beating these parts of you 'to death' can mean a couple of things. First, since you are the antagonist in the dream, how you view yourself in the waking world may be the image of a shadow self as defined by Carl Jung. The shadow self is that part of you which you fear/despise/hate/etc. Ask yourself if you feel you don't like the person you see yourself having become. There is a second part to the image of the shadow self - Jung says that for the health of the psyche we have to face this part of us -and embrace it-. Accepting the shadow within us and allowing it to be part of us allows us to confront the things we want to change and make ourselves psychologically less damaged. The action of killing these other parts of you is significant too. Whatever it is that's driving the anger within yourself, it's taking over other parts of you, overpowering and changing them (because death is about change and transformation, not just ending of life). Is it for the better that they are transforming? Or are they becoming something equally negative? This wouldn't happen in the dream. You have to look at each 'stranger' and identify what in them reflects something within you. That connection is what has been taken over. Only when you identify this can you assess how that part of you is changing.

There isn't much that can be interpreted from an annotated dream. The white dragon could either be the building negativity reflected in the first two dreams, or a growing awareness of the need to end the anger. Whichever, it comes out of your emotions, and if it's a good dragon it also represents a sense of wisdom and inner power. Buildings of any sort represent the body usually, so the fact that the shack/hut is abandoned tells me that you may feel that you are either not yourself or that you have simply made yourself into a hollow shell, cutting the emotion and personality out of the picture. But there is the oppression in the authority figures. Still part of you, now you are seeing how the negative emotions and psyche traits are affecting your inner self. You're trapped in yourself, and the building is set to fire. Fire can usually represent anger, which I'm guessing is the main negative force in these dreams. It takes over the body, and threatens the parts of you left inside. You say you killed a couple of the other inhabitants, which I'm guessing is a mercy killing. If this is the case, then the change is toward peace. Though you are still left to face the anger. I want to know more about this dragon, though. Does it come in to help? Does it linger in the water? Does it command the authority figures? Only from learning what the dragon does would I be able to complete the interpretation.