Not Gonna Lie
Used to indicate that you are not deviating from the truth.
Chuck Norris would destroy Jack Bauer, this is false.
NGL, Jack Bauer would destroy Chuck Norris.
NGL - Not gonna lie
Indicated you are going to tell the truth
NGL, Jack Bauer could kick the shit out of Chuck Norris. Jack Bauer has died twice and came back. Killing Jack Bauer doesn't make him dead, it just makes him angry.
Not Gonna Lie
Used to indicate that you are not deviating from the truth.
NGL, Chuck Norris would destroy Jack Bauer.
No Gay Love
Used to express non homosexuality in a particular action, speech, or thought.
Guy 1: Dude, check out this guy's dick! It's so big!
Guy 2: wtf??!
Guy 1: ngl, man
Guy 2: Oh okay.
guy spazzes out/acts like he's dying.
girl: Keep on doing that, and you're NGL.