I think sending the email separates the "us" that was defined by what you could do for him from the "us" that exists if there is still love between you. It's a good thing, I think. You don't really want him around because you have something (US citizenship) he needs to use, do you? You want him around because that is what he wants!
Girl, keep taking care of yourself. This story isn't over. Even if he has to go back, it isn't over. It's not over until you say it is, and you had better not do that until you can stand up on your own two feet, look into the mirror, and say, "This beepee is worth loving!" And you don't need him anywhere nearby while you work on getting there.
