Your life isn't defined by this particular moment in which you find yourself. Relationships come. Some hang around for a while. Nearly all of them eventually run their course and you move on.
Are you still hanging out with those folks in middle school you thought were your forever friends? What about the ones from high school? Are you still in the first job you ever had or have you moved on?
Life changes. You change. Don't think that this current reality is your forever future.
Be in the moment and enjoy it, but know that it isn't permanant.