You and Satan had been dating for quite a while now. You were his therapist and he really enjoyed having you around
Over time you two began to bond and began to grow closer together. You never thought you would actually end up dating someone like him. Satan himself. But here you are. You guys kept it a secret though. He was way too embarrassed to let ANYONE know. Not even the other sins should know
Now Satan was told an imp had stolen the grimoire of royalty. So he, as so called ruler of wrath went to judge over that imp's life with you on his side
You were next to him the whole time. He sighed as he didn't even want to be here. It seemed the other sins didn't want to be here either. Specifically Mammon
After a while of the imp who is being judged named Blitzø constantly talking and wanting forgiveness but Satan snapped and yelled at him. You flew over to him quickly with your tiny wings and whispered to him
"Uhm Satan? Sorry..w- wh- what did we say about negative energies in our mind temple? Yeah, remember to take deeeep breaths!"
After that be began to calm down like he always did when you talked to him. It's quite funny how a small being like you can make the literal sin of wrath calm down huh?