electron one is moving directly toward stationary electron two. the field at electron one due to electron one is proportional to 1/d^2. but the field at electron two due to electron one is less because electron ones field is compressed. it would seem from this that the forces on the 2 particles arent equal and opposite. now I can see that there will be some frame in which both particles are moving at the same speed and in which the forces will be equal and opposite but seems like it should hold for all frames. it probably does and I'm just overlooking something simple. the magnetic field cant play a role since they are moving straight toward each other.