It's safe to say Shawn Mendes and Camila Cabello are summer's new "It couple."

Just one day after new photos of them making out in Miami surfaced online, sources told Entertainment Tonight the two are the real deal. In fact, they're reportedly "committed to working on a relationship."

"Shawn and Camila originally were just enjoying spending time together and having a summer fling," the insider continued, noting the former Fifth Harmony singer just ended a two-year relationship with dating guru Matthew Hussey and the Canadian heartthrob was busy touring North America. However, then they released their steamy "Senorita" music video and started spending a lot more time together.

"Shawn and Camila have really fallen for one another," the source added.

It's been quite a whirlwind romance thus far. The pop stars first sparked romance rumors last month when they were spotted holding hands after a night on the town. They then spent the Fourth of July together, but when Mendes denied the speculation, it shut down all our hopes... that is until they were spotted kissing. Since then, they've been showing off major PDA all over town and Cabello has even been following Mendes on tour.

Over the weekend, fans even spotted the "Havana" hitmaker supporting her rumored boo at one of his concerts:

Despite not publicly confirming their relationship, these photos and videos and all the proof we need these two are into each other.