Lifted from Fault Determination Rules for Ontario Insurance Act:
6. (1) This section applies when automobile “A” is struck from the rear by automobile “B”, and both automobiles are travelling in the same direction and in the same lane.
(2) If automobile “A” is stopped or is in forward motion, the driver of automobile “A” is not at fault and the driver of automobile “B” is 100 per cent at fault for the incident.
Sounds like you're in trouble.