This is yesterday's news but some more photos and a video of the guy shooting a shotgun have
emerged. No real motive other than some have referred to the guy as "jealous."
(And in the absolutely-irrelevant-but-caught-my-attention, some outlets
referred to the couple being found by Dallas police and firefighters in "their home in the Cedars". I had never heard of the "Cedars" area of Dallas.)