Most Helpful Guy
After 4 years it's pretty safe to say he will have moved on with his life.
Hell 4 years later at that stage of life (if you were 'too young' before I asume we are talking about university/college years) is rather massive.
Between all of that, and working, and moving to a different area, and having been married he isn't the same person any more.
However, that doesn't mean that he wouldn't very much like to see you again (in a friendly way, and potentially persue a relationship down the line), and that you couldnt grow to love each other again... but you would have to be aware that he's probably not the same person, and trying to see him as the same person would doom any relationship to failure.