Lullaby tried all his best to find the right treatment, but unfortunately, most of the therapies were either too incompetent or too expensive (Higher than his net worth!). Eventually, Lullaby was able to find a decent therapist in Ponyville which caused him to settle there. That’s where he met Grace.
Everything went awkward at first, since Handsome Lullaby was seeking therapy and Grace couldn’t believe her client was a famous musician. However, as times went on, they began seeing each other more during therapy sessions, just to the point where they realized that they had feelings for each other, not to mention that they both had something in common: Lullaby was Destiny Blood’s inspiration and Grace was Destiny’s therapist. Lullaby gave Grace a silver heart necklace as a gift to show how much he loved her.
Whenever each of the ponies are not doing their usual routines, they meet each other and usually hang out where nopony can see them. Their best place to hang out is usually the forest, so they can share their moments together in peace.