Dachel
A dacheler is someone who's always there for you, even when you're being a total idiot.
Dachel: 'He's a dacheler, and he's still helping me even though I'm being a total idiot.'
Dachel: 'She's a dacheler, and she's still laughing at my stupid jokes.'
Dachel: 'He's a dacheler, and he's still writing me letters even when I'm being a mess.'