The two first met back in 2017 when the two co-starred in the "History of Pops" stage play, then they started dating in 2018. Hosogai was drawn to Sato's consideration and kindness and how she love his parents and family. Sato on the other hand, was attracted to Hosogai's smile and thoughtfulness. In a tweet, Hosogai revealed, "I'd like to create a warm and loving household where we can support each other. We plan to keep working even harder than ever, so we appreciate your guidance and encouragement."
From all of us here, congratulations to the happy couple!
[Source: tokyohive, Anime News Network]