Big Bang Theory's Kaley Cuoco leaves fans in tears with heartfelt tribute to late co-star

In a trailer for the ABC documentary about Ritter, Cuoco said: “John was like no-one I’d ever met.”

She described him as such a “fun” person who she has the privilege of working alongside when she was younger. 

When talking about Ritter’s passing in the trailer, Cuoco started to tear up thinking about it. 

Describing the day he had to be rushed to hospital she said: “I just heard screaming.” 

While wiping tears away from her eyes, the Big Bang Theory star said: “I just love him so much to this day.”