Luna Lovegood's eventual marriage isn't directly shown in the 'Harry Potter' books, but J.K. Rowling revealed in post-series interviews that she married Rolf Scamander, the grandson of Newt Scamander (the magizoologist from 'Fantastic Beasts'). I love how this ties back to her quirky, creature-loving personality—it feels so fitting! Luna would totally thrive with someone who shares her fascination for odd magical beasts. Their relationship wasn't explored in the main series, but the idea of them traveling the world together, discovering new creatures, makes perfect sense for her character.
What's even cooler is how this mirrors Luna's growth. She starts off as the oddball at Hogwarts, but by marrying into the Scamander family, she finds her tribe. It's a subtle nod to how she never needed to change to be accepted; she just needed to find her people. I always imagined their wedding would be full of Dirigible Plum decorations and maybe a Crumple-Horned Snorkack sighting (or at least a spirited debate about one).