PDA Alert! Shawn Mendes & Camila Cabello Fuel More Romance Rumors

Romance rumors are swirling about singers Shawn Mendes, 20, and Camila Cabello, 22!

On Sunday, the two held hands while heading out for brunch in West Hollywood, seemingly confirming that they are an item.

During the outing, Shawn and Camila packed on the PDA, even gazing into each other's eyes as they stood outside. At one point, Shawn wrapped his arms around Camila.

That same day, they also enjoyed a lunch date at Eatery and went house hunting. Shawn and Camila were photographed with their hands intertwined while wearing matching outfits.

On Friday, Camila attended Shawn's concert at Staples Center, gushing, “@Shawnmendes you couldn't be more amazing. Wow.” At the same concert, Shawn denied that they were dating when a fan asked during a Q&A.

Last week, Mendes and Cabello were seen walking hand in hand as they arrived at his home in West Hollywood.

To fuel more rumors, they were also seen together at a Fourth of July party at Nobu in Malibu. A fan account posted a video of Mendes and Cabello cozying up at the edge of an infinity pool surrounded by greenery and the beach.

A source told Us Weekly, “They were sitting with each other, facing each other and look very intimate. They left together holding hands.”

Over the holiday weekend, Shawn and Camila were spotted hanging out on a balcony. Another insider told E! News, “He was holding her at one point and they were staring into the ocean. They both were smiling the entire time and Camilla was laughing a lot. They rarely mingled with other people and were together the entire evening. They were telling people they were a couple."

Shawn and Camila, who have been the subject of romance rumors for years, reignited the conversation after the release of their new music video “Señorita.”

In the video, directed by Dave Meyers, they play lovers who meet at a club and eventually spend the night together in a motel room.

Of their love scenes, Camila told fans during a YouTube Q&A, “The whole music video was funny because we were both really nervous. I had to drink a lot of wine!”

Shawn and Camila met while touring with Austin Mahone in 2014. The following year, they collaborated on a song, “I Know What You Did Last Summer.” She revealed, “We've known each other for about four years now, and I really love Shawn as a person. He's always been there for me. I'm lucky I found someone like that early on [when] I started this [career]!”

Shawn added in the YouTube video, “She is the most creative, most fun, most empathetic person I know. Working with her is a dream!”

After the release of the steamy music video, news broke that Camila had called it quits with dating guru Matthew Hussey. A source told The Sun, “Camila's relationship with Matthew had run its course and they decided to break up about a fortnight ago.”

The insider added, “It was a mutual decision to end things. But they have spent a lot of time together over the last year and a half and want to stay friends despite going their own way.”

She seemed to address the split on Instagram, saying, “If you really love me, please do not send people I love and care about hateful things. You doing that really hurts me, and it's so unnecessary and heavy and damaging to add more pain to pain. There's a real person behind your tweets. You spamming them with hateful, insensitive things is really not funny, is causing all of us pain, and doesn't all reflect the values I talk about."

Mendes was last linked to Hailey Baldwin, just months before she got back together with Justin Bieber.

Earlier this year, Mendes opened up on his Valentine's Day plans, telling "Extra's" Renee Bargh, "If I had a girlfriend, I think I definitely would celebrate… I never have gone and done something big for Valentine's Day.” Watch!