I haven't really been following the case but just because JD hasn't been violent in his other relationships doesn't negate the possibility that he was violent with Amber Heard.
He may not have been drinking and taking drugs at all, or to the extent he was in that relationship.
I agree that it appears the relationship was both violent and unstable, but as far as I'm aware JD has said he was never violent despite evidence to the contrary.
Re painting metal bistro garden set
Army horses loose on London streets
Have any of you got all electric cars? Pros and cons please.