Help! Driver-side seatbelt goes to open position but doesn't come back.

[curlykicker]

I was one of the fortunate people who rarely had to open the door before turning off the engine to get the auto seatbelt to travel forward to the open position. It still travels forward but now it doesn't come back to the closed position. I'll crank it back and then open the door and sure enough it'll travel forward but not come back when I close the door. So, I've been driving around town lately without the safety of a seatbelt.

The other seatbelt works fine. But the seatbelt warning light does not ever come on.

Anyone care to suggest what the possible problem is? I need to fix this promptly.