Vine sensation Shawn Mendes (pictured left with 5H's Camila Cabello) has revealed that while touring with Austin Mahone over the summer he enjoyed a day off with the Fifth Harmony ladies and they relaxed on a 'lazy river' ride. 

Speaking to Hollywire TV about the downtime they spent together, the heartthrob confessed that it was a lot of fun and was very memorable.

The young star explained: "I remember we had an off day - I forget where we were - but me and Fifth Harmony went on this river ride, where you sit in these tubes and you ride for 5 hours. We all got sunburned. It was so fun... the water was freezing!"

He was then asked about his reaction at discovering he would be supporting Taylor Swift on her forthcoming '1989' tour and admitted that he was simply overwhelmed: "I freaked out a little... I freaked out a lot. I would love to collaborate with Taylor. I hear she's an amazing songwriter."

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Watch Mendes talking about Fifth Harmony below: