I'm sorry Abdullah, what I am going to say is very harsh, but I think this woman is using you, for sponsorship.
Your family sound like they know the truth of it. I would personally suggest you go to your family, ask forgiveness, and ask them if you can come home. You are a son, so their attitude will not be the same as if you were a daughter that ran away from home.
You are so young, and appear to have lived a sheltered protected life in the closeness of your family, and women are very complicated creatures.
you must remove yourself from this situation as quickly as you can, and try to rebuild your life.