Julie admitted that Jeremy never mentioned actually shooting anyone.
And if you read her testimony carefully,everything she accuses Jeremy of saying could be the truth,but it could just as easily have been in referrence to the hurt caused to her by the break up of the relationship,nothing to do with the shooting at all.
Probably the only referrence made by Jeremy regarding the shooting was a tongue in cheek story about Matthew Macdonald,nothing more,then a month later he was appologising and trying to pacify Julie over the fact his feelings for her had waned.This is what Julie was talking about when she broke down in tears in front of Lizzie or Sue or whoever. 'You dont know how evil Jeremy is'' etc.,.
Read her statement again with this in mind.