If you take joy in seeing people hurt mentally, it could escalate to physical torment quickly. This is dangerous and will turn into a crime. It can cause people to commit suicide, and have mental issues as well. You are not only ruining yourself, but others. You and your boyfriend need serious help. I'd talk to your parents. At least you are noticing this now, I hope you plan to become better and learn to change your ways.
I currently have braces and at first they are going to cause a slight pain to your teeth, make sure you brush them even more then usual and more thoroughly, brush your teeth after each meal if possible.
The correct answer is Antihypertensive drugs. Antihypertensive drugs cause dilation of the arteries. Antihypertensive is a class where drugs that don't fit in previous categories which are found in the alpha-blocker.