Another thing to do could be just letting time pass on by and then talking to them about it again. If they are still worked up over it, you can just make fun of them about not letting go of the past. Basically, the best course of attack is just being a nice person and communicating about how you don't care what they did and wanting to still be friends with them. This is like throwing a curve ball because you can say stuff about how crazy they are, and they won't be able to do anything back at you, and they will be left speechless. Also, they are not going to want to do anything with you because they would be afraid of hurting you, so it all works out for the better balance in nature!
Okay, so I have gained a good load of experience and I have this high level of comfort with communicating properly now and approaching my ways of texting sentences by not going too far these days. In a way, I've been learning more proper etiquette from dealing with sensitive people and having put with stupid things that they were about doing. I was oblivious but now I'm ready to be like a tour de force.