Trust it's a kind of love. That's why we feel so hurt and we say... Never again 😅.
And as usual, our brains try to fuck us over 🥹.
Oxytocin increases trust, likely by suppressing the neural systems that regulate our fear of betrayal.

https://www.psychologytoday.com/us/blog/love-and-gratitude/201310/oxytocin-the-love-and-trust-hormone-can-be-deceptive