First, that is some majorly tiny font...my eyes hurt from reading it. DX
Second, you have some decent dream re-call. Most people don't.
You could've been sleep walking, people are much more willing to things when their subconscious is the only one awake. (keep in mind people only sleep walk when they are HALF asleep, when people are 100% asleep they go into sleep paralysis)
If it was a dream your family was probably worried about you because of your physical responses to the dream. (abnormal breathing, eye movements, ect.)
I know my mom gets super worried about me when my breathing gets all weird while I sleep, happened while I was in the hospital.
And yes your friend could've been in the dream too, people can share the same dream without realizing it or recalling it, that is if you are connected in some way (friends, strangers passing by that greeted one another, family, co-worker, ect.)
And sorry if my response is too long. I've been reading about dreams and sleep and I just love shareing what I learn. ^^