You hurt him worst of all of us. I don't know if what he did was intentional or not, but I know he was entirely in that headspace. I'm... I don't think he could have crossed that line without a constant shoving that direction.
He's forgiven you though. I don't think it should have been that easy for you. I honestly think that even though he did some stupid things, and he can be a dick, he's a good person, and too loving and caring. If someone had done that to me? I don't think I would have forgiven them.
You need to try, Miniver. You really need to fucking try to check your shit at the door. If you think it's all in good fun, you had better know when enough is too much. Chances are, you'll wind up hurting others, and then losing your head over it.
You really fucked up, Mouse. I love you, and I care about you. But you fucked up in a way most people wouldn't get to come back from. But our family is full of fuck ups and we all learn sooner or later to deal with our problems.