Holy fuck. You both sound like total losers. Grow the fuck up.

Are you both adults? Why would you behave so childishly? At least try and stay civil- if you ever need a freaking kidney or blood transfusion, your sibling is your best bet.

Both immature, what a surprise. Definitely a horrible thing to do. So i guess trying to be mature and solve the problem is out of the question eh? geez @ some people...

You and your brother are the exact reason why I had a vasectomy. You're both a couple of infantile little twits!

You and your brother are in an abusive relationship. You are both abusing each other. At this point, there is no determining who is at fault. Simply stop seeing him. Stop texting him. Stop dealing with him at all. You do NOT need his approval for your life, or for you happiness.

At family dinners you stay away from him, interact as little as possible. Do not rise to any baiting on his part. If someone asks what is wrong between you, you simply say that you are different people, have little in common, and wish to respect each other's boundaries.

Then change the subject.

they were both teens..

sounds like hot tempered siblings. Sometimes this is display of more deep bond. Not the most constructive display but a deep love nonetheless.

Grow up. Seriously.

We might need some context to be able to evaluate the gravity of your situation. Contrary to the above commenters, I don't think either of you are bad people, nor do I think the solution is to stop talking to each other. My guess is that you're both pretty young, and just need to grow up a little.

I grew up with little cousins who love to play pranks. It gets people mad at them but you know that they are harmless and just showing affection in their own way. Sometimes, things can get pretty nasty between siblings. It's best not to retaliate: you don't want things to escalate, and more importantly, you don't want to say or do things that you might regret later on, just as you do now.

You shouldn't hate your life. Your life is what you make of it. It's not too late to break the habit and have a better relationship with your brother. I think this is a great opportunity for you to reflect on what happened and learn from it. How do you want your relationship to be in 5-10 years? Do you want to be strangers, never enter each other's houses, not knowing each other's family after you get married, etc?

Take the first step now to a better relationship for both of you. You don't need to become best friends but respect each other enough to feel good around each other. Start by ignoring any offence he might do to you. Don't provoke him. Be the smarter one. Then, over time, you might want to start doing good deeds for him: get him some drinks, take his side in front of your parents, etc. Do a little experiment. I bet he'll notice the nice gesture and will feel bad not to reciprocate.

Don't feel too bad about what happened. You didn't mean it. (You could say you did a Halloween prank.) What's done is done, you can only change the future. A lot of siblings don't get along when younger but as they grow older, they become conscious of the importance of the people and relationships in their lives. Don't wait until you're 40 or 50. You can change things NOW!

Stupid.