The 27-year-old musician didn't bother to go and watch the 'For Whom The Bell Tolls' rockers' headline set on Saturday evening (28.06.14) because he thinks their music is boring.
Speaking to BANG Showbiz backstage, he said: ''Metallica just play one song. ''It's just the same song over and over again with Metallica. I wasn't interested in their set.''
Paolo drew a large crowd for his set on The Other Stage on Friday (27.06.14) with a set packed with tracks from his latest album 'Caustic Love'
The Scottish singer stuck around at the festival to party and was spotted kissing a stunning brunette backstage on Saturday night.
Paolo spotted the mystery brunette and immediately went over to talk to her, after chatting to her for just a short time they started smooching.
An onlooker said: ''Paolo and the girl were kissing very intensely. When they weren't kissing the girl kept staring into his eyes and was touching Paolo's chest.''
Despite Paolo's lack of interest in Metallica, the band were watched by the biggest crowd of the weekend when they took to the Pyramid Stage on Saturday night and their performance was acclaimed as one of the highlights of the weekend.
Drummer Lars Ulrich described the experience as ''sensational'' and insisted he and his bandmates, frontman James Hetfield, guitarist Kirk Hammet and bassist Robert Trujillo, felt honoured to be given the chance to perform at the world famous event.
Lars said: ''That was sensational (for us). I don't remember much of it ... the energy was fantastic. It was other-worldly.
Steven Tyler prays for Chris Cornell during Asia show.
'Pirates of the Caribbean' is an exciting new career development for Brenton Thwaites.
The actor didn't want to be "wolfy".
Tragedy strikes in Manchester