LOL you guys sure got me there.
I'm not a truck driver and I don't tailgate. I'm just a lowly REMF stationed in Germany. And if you tried something like that over here I garauntee you and your girlfriend would be in the hospital right now and the Polizi would leave a nice ticket beside your bed.
And, when your driving, you should never be "minding the business"(I think I know what you're saying, but I'm not sure 'cause I'm illiterate - Maybe your boyfriend can clarify). Apparently you didn't pay attention in Drivers Ed. You should always be aware of other drivers and adjust accordingly no matter who is right and who is wrong. It's called Defensive Driving. i.e. If someone is tailgating you could: a) use hazard lights(their reflexes will be the same as if you used brake lights)
b) slow down gradually by lifting your foot from the accelerator, forcing the tailgater to do the same, then increase your speed to widen the area between your cars (It's much easier for your car to regain speed than it is for a truck) or c) gradually slow down to a speed that would minimize the probability of an accident and wait for the tailgater to pass you.
One day you will "react" to a tailgater who might just happen to be adjusting his radio or looking at his kids in the rear view mirror and your parents will be stuck with the funeral bill. Sorry if I hurt your feelings, I was just trying to make you realize that what you did was far from intelligent.