Millie Bobby Brown appears to announce engagement to Jake Bongiovi - using Taylor Swift lyrics

Stranger Things star Millie Bobby Brown has sparked an internet frenzy after posting a photo with boyfriend Jake Bongiovi – complete with a sparkling diamond ring.

Brown, 19, sent the internet into meltdown when she shared a loved-up photo of boyfriend Bongiovi, who turns 21 next month, featuring a very conspicuous ring.

"I've loved you three summers now, honey, I want 'em all," the Stranger Things and Enola Holmes star wrote in the caption, a reference to the aptly named Taylor Swift song " Lover ."

Bongiovi, also an actor, is the son of rock legend Jon Bon Jovi and has been dating Brown for about three years .

He posted a similarly sweet message on his own Instagram account, featuring two snaps of the couple and the caption: "Forever".

While there has been no official confirmation of the engagement, fans have surmised that the couple are now engaged.

"Y’all better get married or else," one fan commented.

Another wrote: "Best couple ever," while a third added: "Literally crying."

Musician Pixie Lott wrote: “Omg. Congratulations you two, so happy for you.”

However, some fans have pointed out how young the pair are.

"Married at 19?" one commenter asked.

Another wrote: "Mille, last time I remembered, you were my age."

A third, more practical fan, said: "Congratulations  @milliebobbybrown , now give us another season on Stranger Things."

Brown stars alongside Noah Schnapp as psychokinetic-powered Eleven in Netflix's sci-fi smash Stranger Things and is set to reprise her role in the fifth and final season, which begins filming later this year.