I cant find the right poem about jealousy

the poem is called jealousy but there is alot of poems with that title! i was wondering if anyone could help me find the right one!! its about a boy and a girl who loved eaother but they were best friends and the guy made her jealous and the girl killed herself!!! thanks for any help!!!

Do you remember the author's name? Perhaps that might help.

i cant remember it but thanks for the help anyway