This meme has a distinct lack of Theseus with either Grindelwald or Dumbledore so here.
The bond forms after COG when Theseus is attacked one night. They can feel each other's feelings so both Dumbledore and Grindelwald are instantly in immense pain and realize what happened.
Cut them trying to resist the pull to each other they feel as well as trying to reach the still lingering Good they feel in Grindelwald.
With Competent!Theseus and this being a kink for both Dumbledore and Grindelwald.
Dumbledore/Theseus/Grindelwald OT3 Soulmates Competence Kink
The bond forms after COG when Theseus is attacked one night. They can feel each other's feelings so both Dumbledore and Grindelwald are instantly in immense pain and realize what happened.
Cut them trying to resist the pull to each other they feel as well as trying to reach the still lingering Good they feel in Grindelwald.
With Competent!Theseus and this being a kink for both Dumbledore and Grindelwald.