Most Helpful Guy
Yes, may be he hopes that he can come back into your life if he remains friends with you, because that way he will still be a part of your life. However I can't say for sure, it's just one possibility.
Most Helpful Girl
It's just a way of them wanting to end things on a relatively good term but it's never the smartest. You did a great choice and still have your dignity sometimes when people want to leave you just have to let them.