When Zac Mirabelli walked into the Love Island villa in Fiji, his eyes shot straight to Elizabeth Weber.

The two coupled up during episode 1 of the first American season of the beloved British reality show and remained inseparable throughout its five-week run. During Wednesday night’s finale on CBS, fans crowned Zac and Elizabeth their favorite couple — and they walked away with a $100,000 check.

“I feel like it still hasn’t hit me yet, fully,” Elizabeth, 24, tells PEOPLE. “We were able to see a clip of it today and we were like, ‘Oh, we won!’ We had to see it to believe it. It’s insane.”