Originally Posted by TrickyNicky
Not necessarily. Robert makes mention of killing "him" in his dreams over and over for what happened with Lyanna. It is a reference to Prince Rhaegar, whom Robert killed in the Battle on the Trident during his rebellion.
Inferred then, but I don't think the trident and such has been mentioned yet.
Ahh, and yes I suppose I did say the king killed her, I should have said her death led to the rebellion against the king and the Targaryen's in general.