I need to go back to my basic liao....

always getting the wrong co giao in JC... learn too much TV sms... no good.
Recently get to know a vb who always use "ak"... dunno what it is. some sms to share. Bros please help to decode the highlighted words.
VB: a oj bua naj sjnh nhat em a tang e gj da a
KT: a kg bit phai tang e cai j. tang e trai tim cua a dc kg? Chuc e sinh nhat vui ve.
VB: k tag j lam njem ha a
KT: tang e 1000 nu hon se dc niem
VB:
Ho 1000 caj
ruj a chet ln
KT: kg bao gio chet nhung moi mieng thoi
VB: bg a tag e mon wa dj e gan ve
ruj do a
ak
KT: ok. a dang suy nghi phai mua j tang e
VB: a mua j tag cug dc ma a
Later in the evening, I met her, talk to her in JC then I left the place as no kaki to drink. She go work... sms follows.
KT: hnay kg co ban di uong bia voi a, gio a di ve nha
VB: a k tag e j ca
KT: a lam xong, a wa joo chiat an com. Chua co thoi gian di mua wa tang e.
VB: hu hu a k tag e
puj wa
ak