I've been in a relationship with a guy from high school for about 11mnths. We were near our 1 year anniversary when my boyfriend broke up with me over the fact that I wanted to go to a club with my friends (who were all girls). I don't go out too often and I never got to hang out with any of my friends in high school because all I would do is hang out with him. Im in university now and its my first year and I just want to get to know my classmates and go have fun with them. Try having some girl friends for a change! - He didn't like that. He demands attention and always complains I do things for everyone else but him, but that IS NOT the case at all, he was always my first priority when it came to friends.
I'm from a strict culture and we are not aloud to date outside our race, and now that we are broken up I want to stay single and focus on my university studies, not to mention the fact that I don't think I love him the way I used to. He wants us back together to the point where he threatens me and says that if I don't treat him better than he'll go tell my family about our relationship. I don't know who to talk to about this because none of my friends understand my cultural issue and my family would disown me if they ever found out about him.
What should I do in my situation?
How should I tell him that I cannot be with him without him threatening me to get what he wants?
I feel manipulated - I don't want to talk to him anymore and he still calls me! I feel forced to talk to him.. this is terrible, help!

The answer here is quite simple. You are fed up with him. Don't talk with him. You don't have to and no one should ever make you feel like you have to. If it becomes so serious that he is really bothering you, change your number or put a protection order against him.

Take away his power by telling on yourself. Use words to your parents that indicate you are sorry you did it, it's over, and for the most part, they were right. (you don't have to TOTALLY believe that last part)

Now, your parents will soon get over your PAST transgression since you aren't dating him anymore and have come to them showing contrition. See, his power over you is gone.

When he tells you to treat him nicely, tell him you're praying for him, that's the best you can offer. Then hang up or walk away.