Australian actress Phoebe Tonkin and her boyfriend Alex Greenwald started dating in early 2020, but the couple has kept their relationship away from the public eyes. 

The H2O star first spilled beans on their budding relationship through two specific Instagram posts. At first, she promoted Greenwald's new song, 'Devastator,' on March 13, 2020, tagging him in the caption.

Then, she mentioned her boyfriend in another post dated April 22, 2020. The upload featured an old advertisement for recycling and a caption that read, "Happy Earth Day from a twelve-year-old @alexandergreenwald."

The growing chemistry was quite apparent in the tone of Tonkin's caption. And it was conspicuous when Greenwald shared a picture of Tonkin wearing his band's t-shirt.

But the confirmation regarding their romance came months later. 

Phoebe Tonkin and Alex Greenwald Went Instagram Official 

Tonkin and her possible future husband made their relationship Instagram official on June 29, 2020.

It was Tonkin who carried out the big move. She posted a picture where she shared a passionate smooch with her partner while wearing their face masks for the pandemic.

The Sydney native reminded her fans and followers to wear a mask, through the caption.  

Since announcing their dating relationship, Tonkin and Greenwald have been going strong. But they haven't bothered to keep their followers in the loop regarding their romantic rapport. They have stopped sharing pictures with one another on socials. 

Having said that, Greenwald did share a throwback picture of Tonkin with his guitar on January 1, 2021. In addition, the Phantom Planet's lead vocalist announced his followers could win the guitar if they bought a ticket to his band's show.

It's not sure how much the post helped amass an audience, but it sure clarified that he and Tonkin were together.  

Greenwald's relationship with Tonkin came after he broke his engagement to Captain Marvel actress Brie Larson in January 2019, after nearly six years together. 

The duo had gotten engaged in Tokyo in March 2016. 

Phoebe Tonkin's Ex-Boyfriend 

Just like her partner, Tonkin has also gone through a fair share of failed relationships before hitting it off with the singer.

The 32-year-old was in a relationship with fellow actor Paul Wesley. The former flames met on the sets of The Vampire Diaries in 2012 and started dating in September 2013.

Following that, the duo was pretty open about their romance, flaunting pictures of each other on their Instagram handles.

They even celebrated the 2016 Christmas together in Sydney, Australia. But all the bliss ended as their relationship ran its course. As a result, the pair broke up on good terms in March 2017.

They reconciled shortly but parted amicably again in October 2017, ending their four-year rapport once and for all. 

Long before Wesley, Tonkin reportedly dated Harry Potter star Tom Felton, for two years, from 2006 to 2008. However, there has been no confirmation regarding their relationship.