Why is he acting like this?

Question

me & my sister are best friends. we tell each other everything. i was talking 2 my ex on myspace & i told him that my sister was gonna read my diary. the diary had all of the things me & my ex did together like our past s*x life etc. he got mad & told me not 2 talk 2 him. why is he like this?

Answer 1

Probably because he thought you were a trustworthy person, and now he found out you are a *****