Oh I just saw that he even told you that he wouldn't marry you from the beginning. Sorry sweety, you did this to yourself. These men and this culture is not like other cultures and it's pretty complicated. Don't get involved with another man in that way - if you start a relationship with intimacy it will most likely stay that way. Start a relationship on friendship and inshallah he will respect you and the relationship will be a real, caring, loving, healthy relationship and partnership rather than this taking from you and you just giving it. Don't spend another minute on this man. Just try to end it telling him that you respect yourself more than this and he should too. That you are a woman just like his sisters are women, and deserve respect and to be honored. You don't really have a right to be angry with him though. While what he did was beyond wrong, he was honest with you from the beginning and you went along anyways.
Don't be hard on yourself. It's a totally foreign culture and mentality - lesson learned :)