"2. The first time we went to a disco(our first night out after marriage), the day after our wedding, she refused to dance with me, saying I dont dance well."
Strange behaviour. Been there.
"4. She had a vivid sexual imagination, but her idea of intimacy was sex, in 2.5 years of marriage, we never got emotionally intimate. Not that I did not try. I tried everything under the sun"
Definitely been there too. you might like to look at my long post "A Lady With Histrionic Personality Disorder" where I describe their inability to have close meaningful relationships with anyone.
I tend to agree with the other posters that this kind of behaviour is never really going to change. It is too closely tied up with their identity, and besides, they like being that way most of the time.
Can't you sue the person who arranged the marriage for you.