Bicycle Austin forum

I was wondering what the laws were concerning riding to the right of cars at red lights and getting in front of them before the light turns green. I pulled up next to a guy in an suv in front of him. The light turned green I went and he drove by me very close cutting me off making me have to stop so I wouldn't get hit. I know that motorist are supposed to give bicyclist three feet when passing. Was I in the wrong for pulling in front (while still off to the right) before the light turned green. I got really mad at this guy. I feel bad because sometimes I retaliate by hitting the side of the car if I pull up to them again, but I have almost gotten run over numerous times by motorist that don't seem to care if they hit me or not. Anyways after I knocked on the side of this guys car he followed me for awhile before I stopped and confronted him. He had somebody in the passenger seat and I motioned for them to roll down the window. The whole time he was following me he was on the phone. When I stopped he didn't roll down his window he was on the phone and was reaching for something out of the compartment next to his seat. At that point I just started riding in the opposite direction. This was really stupid on my part to go out of my way to retaliate. I'm sure this built up any animosity he had already towards cyclists. It just really gets to me when motorist don't seem to appreciate that if you hit a cyclist, you are not hitting a car there is a good chance that you will maim or very quite possibly kill that person.

Anyways, if someone could please tell me the law concerning getting in front of cars stopped at red lights that would be greatly appreciated.  Thanks