Sadly, it seems that you are just gonna have to watch and cry with him. I would catch the mom (usually a lil more understanding than dads...) and tell her about how close they are and that you just don't want your son to suffer on account of conflicting schedules and you wanted to know if its true at all?!
Then..I would try to let him see his friend as much as possible. This will probably be one of his first memories. All you have to do is hold his hand, he'll be ok.
Make sure you get him into a sport of some kind. This way he'll make friends (& enemies, so to speak...lol) in his group. He will be MUCH better off learning how to communicate with his friends after he joins a group that ALL have one thing in common right off the bat.
GOOD LUCK!! Alex sounds like a really sweet, great kid. Where do you live? in sc? if you don't mind me asking?
~~Nicole