I'm still trying to get my head around his motive if this was premeditated. He is rich, famous, and despite his missing legs he has no trouble getting hot g/fs. He isn't married or engaged to the girl, and has no financial duty to her if she dumped him. According to her posts online she was happy with him and didn't want to leave him. Even if she did, he wouldn't have much trouble getting another hot g/f. So why plan in advance to kill her on Valentine's Day? Why subject himself to the risk, embarrassment, cost and legal scrutiny? If he was really pissed at her, show her the door. Costs nothing. If he really loved her and didn't want to break up and she was dumping him, well, that sucks, but how can one kill someone one loves? If he didn't love her, not worth the trouble to kill her; if he did love her, he couldn't kill her as he loved her.
If it was an accident like he claims, my problem is he is sharing a bed with a girl, yet when he wakes up and thinks someone is in the bathroom his first reaction is to blast away with a 9mm through the door? WTF? I would assume it was the other person in the bed using the john until I checked otherwise. He says he yelled a warning? Why didn't she yell back "Its me, don't shoot?" If he had a panic button that gets armed mercenaries on site in 90 seconds, why not push it if he thought it was a burglar? Would a burglar lock himself in the john and make noises in their when robbing an occupied house? When shooting through the door, why aim for the toilet? If a burglar was in the bathroom - would he be sitting on the toilet? Would he not, when getting the gun from the bed, notice that his g/f wasn't in the bed?