There are 2 possible ways to interpret this question. The first is "is Joe Jonas stupid because he broke up with her?" and the answer to that is yes. I mean, what kind of idiot breaks up with Taylor swift?! The other way to interpret this 问题 is "is it stupid that they broke up?" as in "should they still be together?" and for that my answer is no. Taylor deserves better than family channel...!
it was COMPLETELY stupid for him to break up with her because SHE IS AMAZING!!!!! but it doesn't matter because SHE'S BETTER OFF WITHOUT HIM!!!!!! :):):)
