A brief description/deciphering of what I wrote:

The party-goers are the people I have to talk to daily. The bouncers are the people who don't get me, regardless of whether they are judging me on first impressions or on general appearance and the words that I say and actions I do. Anyone, including family members, can act like the bouncers at times, even though they usually try to understand
or accept me.

The haunting thoughts are the real thoughts that I encounter every day, and they are sometimes exactly what I wrote. The imagined party member that helped me could have been any neuro-typical person, who I often want to come and comfort me during these times (which are frequent), but I have to accept the fact that they won't, especially since they have lives to live. Parties to get back to.

The imagined outcast, as you probably suspected, is another SPD'er who is in the same situation as I am. I know they exist, but they aren't physically present, so it's hard to believe they are truly around. As for owning the house and throwing the parties myself, that explains the person I would be if I can ever obtain the inner peace and sensory balance that other's have, and yet have to try to become even if I don't get what they have.

I'm glad that I wrote this, as it helped me get some stuff off my mind. Feel free to comment if you wish.