i actually got rid of it by listening to other bands, and realizing there's more music than just the jonas brothers.
if you want i can refer you to some awesome music

some bands are fall out boy (favorite ever), panic at the disco, cobra starship, the academy is...
i have a ton more but i can't think right now. grrrr. haha.
but if it's affecting you that bad you need to talk to someone, i can relate to this since i went through the same thing.
for about a month (during the school year) they were all i would look up and in school (my school has laptops...for whatever reason i have no clue)
i would just look them up & not pay attention to what my teacher would say & my grades were suffering.
i realized then i needed to do something else with my life and with my friends i tried not to talk to them about them and new stuff
then i realized the jonas brothers aren't everything.
& maybe you're just using the music as an escape,
i know i for sure did!