Orlando shooting survivor

Katy Perry weeps during surprise for Orlando shooting survivor on 'Ellen'

Katy Perry couldn't stop crying when she walked on stage and surprised Tony Marrero, a Pulse nightclub shooting survivor. And neither could he.

Marrero was telling Ellen DeGeneres on her show Thursday that Perry's music, specifically "Rise," kept him going during his darkest moments. DeGeneres asked him, "Have you met Katy yet? Would you like to meet her?"

That's when Marrero turned to see Perry walking towards him with open arms.