How come it is killing me to wait to get married?

I have a vietnamese girl from vietnam who I am supposed to marry someday in the future like a year or two and it just kills me having to wait to marry her. I'm a vietnamese american guy living in the U.S and I feel so lonely and I don't have anyone. I don't even have any friends. Almost all of my friends moved away for college and are in relationships. I feel so lonely and I need someone to be with. How come it is just killing me to wait to get married ????