What should I do with the information my brother gave me?

Let's wait until he calms down. You may be angry, but one thing, you should keep your distance from yourself, because judging from his behavior, you are an aspect he relies on. If so, it will affect your relationship. If you want to be friends, you should slowly distance yourself. If not, then you should also be strangers, because you did what you should do! ~ after all, thanks are right, but excessive thanks will make him misunderstand or he has misunderstood that you should do so!

Talk to him sometime and have a good talk. If you have no feelings for people in the future, don't bother others too much, at least beyond the level of friends! ~ (The short message he sent is really hurtful and ugly, but I won't comment on this person now, just answer your question from your point of view)