someone betrayed me

Someone told my mom tat i hv become a playful boy and no mood to study ady.. After my mom finished chatting through the phone, and the 'war' started>.<>
She/he told my mom tat she/he knew tat from my blog.. Well, I just record dowm wat I fell and wat i hv done by the day only.. And pls.. understand my article clearly then oni tell my mom okay!!?
I dun like 'u' tell my mom the thing by adding some opinion of 'urs'..