Shawn Mendes has hard launched his relationship with Brazilian model and actress. Bruna Marquezine. 

On Tuesday, the 27-year-old singer made their romance Instagram official as he shared a sweet tribute and penned a sentimental message to his girlfriend in celebration of her 31st birthday. 

The pair have been romantically linked since December of last year, when they were first rumored to be dating after being spotted spending time together in her home country of Brazil. 

In his caption, he wished her a happy birthday in Portuguese. 'Feliz aniversário my baby,' he wrote alongside emojis of an angel wing and a red heart.

He gushed about how Marquezine 'changed his life' before publicly declaring his love for her.

'You are a light and a mãe in every room you walk into,' he continued. 

'Not to be tooooo sappy but you've truly changed my life and I am so so grateful for you,' he added.

Mendes concluded that hat that he loves her 'so, so, so much'. 

Prior to his relationship with Marquezine, Mendes was romantically linked to Hailey Bieber, Sabrina Carpenter and Dr. Jocelyne Miranda. 

However, his most famous and public relationship was with Camilla Cabello. 

The two singers, who collaborated on the their hit song Señorita, were in an on-and-off relationship for over two years before calling it quits in 2021 and later briefly rekindling their romance at Coachella in 2023.

Despite only ever dating woman publicly, Mendes has been the subject of rumors about his sexuality. 

The two singers, who collaborated on the their hit song Señorita, were in an on-and-off relationship for over two years before calling it quits in 2021 and later briefly rekindling their romance at Coachella in 2023. 

Despite only ever publicly dating women, Mendes has long been the subject of rumors about his sexuality - which he addressed at a concert in 2024. 

Discussing his track The Mountain, which includes the lyrics , 'You can say I like girls or boys / Whatever fits your mold', he told the crowd, 'Since I was really young, there's been this thing about my sexuality, and people have been talking about it for so long.'

'I think it's kind of silly, because I think sexuality is such a beautifully complex thing, and it's so hard to just put into boxes.'

He continued: 'It always felt like such an intrusion on something very personal to me, something that I was figuring out in myself, something that I had yet to discover, and still have yet to discover.

'The real truth about my life and my sexuality is that, man, I'm just figuring it out like everyone. I don't really know sometimes, and I know other times. And it feels really scary because we live in a society that has a lot to say about that.'

Mendes said that by speaking publicly about the speculation, he was making an effort 'to be really brave' and 'just allow [himself] to be a human and feel things - and that's all I really want to say about that for now.'