Someone rear ended me today I was switching lanes to my right and then this pick up truck came up and hit me. Funny thing is his front left corner hit my right rear corner. Would this be considered my fault? He was going pretty fast and I did merge in after seeing him but I did not know he was going that fast. He did not honk. Could he have tried to swerve towards the right thus hitting my right corner? Or maybe I subconsciously turned my wheel to the left very fast when my passenger said oh ****? What could it be? Can someone help me out with this situation? thank you so much.