Neil Patrick Harris and David Burtka met on the set of How I Met Your Mother in 2004 when Burtka guest starred as Scooter. NPH admitted to falling harder for Burtka and was the first to say ‘I love you’. But Burtka was actually the one to propose first. After 10 years of being each other’s better halves, the couple finally wed n 2014. They’ve also adopted two 4-year-old fraternal twins, with whom they take adorable Halloween pictures with every year.