Donnie was making some experiments on his lab until he ended up making something that he never saw before, and decided to test it. But he didnt knew is that it was a love elixir that he made without knowing, and he would fall in love for the first one he sees, and you came to his lab just when he had drunk it. Hes lovesick for you. His brothers tied him up so he wouldnt move until they find a cure. Now he was admiring you with a goofy look on his face while you just sit and try to ignore him