Idk/Idek/Idfk-I don't (even/fucking) know
Idc/Idrc/Idfc/Idec-I don't (really/fucking/even)care
Sm-So much
Tysm-Thank you so much
Ily-I love you
Ilysm-I love you so much
H8-Hate
D8-Date
Ig-Instagram
Mss-Messenger
Lgbt-Lesbian, Gay, Bisexual, Trans
Fb-Facebook
R-Are
U-You
Y-Why
Wdym-What do you mean
8-8 or ate
Dem/Em-Them
Omg/Awh ma gawd-o my god
Oml/Awh ma lord-o my lord
Smt-Something
Lmao/Lmfao-Laugh my(fucking)ass off
Idgaf-I don't give a fuck
Idgad-I don't give a damn
Lol-Laughing out loud
Jk-Joking
Ma/mah-My
Meh-(something like) hm so it's like idrc
Ik/Ikr-I know (right/really)
Wth-what the hell/heck
Wtf-what the fuck