I'm sorry this is so difficult for you

Saying that you're "behind" becuase she was married at 22 and you're not married/in a steady relationship by 22 is a bit off-base. A lot of couples get married TOO young-- before they really know who they are-- and later get divorced as a result. There is something to be said for being a mature and independent adult before rushing into marriage.

However, I am wondering why you haven't told your mom about Yousef? Or anyone else you dated? If you did feel seriously about Yousef, why not tell your mom about him? Usually, people only hide relationships from family/friends if they think there IS something to hide-- i.e. that there is something "wrong" about the relationship. Usually, it is not just that they fear the other person will be judgemental, but that they themselves feel uncomfortable with some aspect of the relationship. Also, since you said your mom doesn't think you've ever dated anyone, have you dated other guys before Yousef? Have you only dated guys long-distance, or have you also had boyfriends in your hometown? Have you had boyfriends that you've been able to hug, kiss, etc? If you've primarily dated guys long-distance, is there a reason for that? Is it more difficult for you to talk or get close to someone in person vs. online? There are a lot of people who feel that way, but that may be symptomatic of something like a fear of intimacy, or social anxiety, or something else that just goes beyond just the "bad luck" of falling for someone who doesn't live near you. If things didn't work out with either Hakim or Hassein, would you be open to dating someone who lived in your area, so you wouldn't have to deal with the long-distance issue again? That might help prevent you from getting hurt again if visas, etc. don't work out.