It's either people wanting your trust and they are actually willing to do anything and that they swear they won't make the same mistakes again. OR ANOTHER DEFINITION, which is people who say "just trust me." to make you trust them while also manipulating you. Watch out for these tactics.
Stranger 1: Hey there, just trust me
Stranger 2: I'm not comfortable with trusting you, I barely know you
Stranger 1: I know, but you can trust me.
by emmie_889 August 17, 2021
A typically sarcastic response to someone who has made a bold claim, but has no proof to back it up.
*playing among us*

blue: red sus
orange: any proof?
blue: it’s red trust me
purple: source: dude just trust me
by Empress Jihyo October 21, 2020