The pop star is engaged to Sophie Turner, he announced on social media on Sunday.
Turner posted to Instagram with a very romantic and cute pic of the two holding hands and the actress showing off her engagement ring, which is spectacular. Jonas shared the same photo, writing "she said yes".More news: Modi praises Kumar's commitment to Bihar; Launches projects worth crores
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In July, Turner, 21, spoke about the pressures of being in a celebrity relationship to Marie Claire.
"Ahh! Congratulations to my brother. and sister in law to be on your engagement".
She shared: "I'm in a relationship, but it's a very private relationship". "It's frustrating (that) it's the most mundane things that make the news - how boring!"
She continued, "It really helps you own those insecurities".
Sophie, on the other hand, opened up about her love life to InStyle UK, admitting she has "never dated anyone who I didn't know before or who's in the industry".