The couple announced their engagement on Sunday in a stunningly coordinated series of posts featuring an even more stunning engagement ring. The photos, posted to Instagram simultaneously, show the couple's clasped (and in Turner's case, blinged-out) hands.
The rest of the Jonas brothers were pumped to hear the big news.
Youngest brother Nick shared the above pic and wrote, "Ahh! Congratulations to my brother... and sister in law to be on your engagement. I love you both so much."
Kevin Jonas added on his own Instagram page, "Congrats @joejonas and @sophiet so happy to welcome you into the family!"
The DNCE frontman and the "Game of Thrones" star reportedly have been dating since at least late 2016. They became Instagram official in January, when Turner posted a photo of Jonas enjoying ... a cigar by the ocean.
Apparently, he's a man of many vices when oceans are involved. (No judgment.)
Congratulations to the happy couple ... and seriously, props on one of the best celebrity engagement announcements we've seen yet.