It can mean many things including:
Gone To Lunch; Gym, Tan, Laundry; Got To Love
Inbd mean "It's no big deal" in text language.
BTW means By The Way in text language
gtl
in text language ttfn means ta ta for now
Inbd mean "It's no big deal" in text language.
defo
The population of GTL Ltd is 7,066.
RUS in text means "are you serious".
Group Term Life (life insurance)
gnu
who you speaking to
To Be Fair