Instant dreams, continuity, and...

Hello

I have three questions that are not exactly related one another, but I hope someone can help me out.

1st- We are supposed to dream when we are in the REM period,right? But sometimes, when I go to sleep (or try to) and there is a light turned on (in my room of course) or there is more noise than in a normal day(product of a party or reunion in a house nearby), I tend to go t sleep like if just thinking something and then I have a dream , a short dream,because I wake up after an hour (or hour and half)of being asleep. But I never feel when I went to sleep, and those dreams are the most vivid ones, and they feel TOTALLY real, I mean when i wake up I remember them clearly and they feel different from my normal dreams like RL, Is that normal, have anyone had those kind of dreams? Can you go lucid? (I know you can but, since they are too real [at least for me] I can't :/)

2nd-I know some people have sometimes dreams that are connected. But why is that sometimes I dream something about being in a place, and years later I dream the...same dream, I remember i have been there, I keep dreaming but the second time the dream is longer. Kind of like deja vu. (And again I can't go lucid XD )

3rd-This question is weird, why most of the time when I have a dream involving sex, I end up having gay sex? And most of the time is me the one trying to start gay-sexing. And the next day I just get the weird feeling. :S Is there something I like, that I don't know about http://img.photobucket.com/albums/v2...ato/ohnoes.gif


(I don't know if what I posted makes any sense :P )