With his blue eyes twinkling and rock star swagger on full display, the crowd watched as Jared Leto invited a teenage girl up on stage to swoon over him while he purred into his microphone with a guitar on his lap. It was 2013 and Leto was already an established Hollywood player at the peak of his career and touring the world with his band, Thirty Seconds to Mars. 'And how old are you?' the actor and frontman murmured. '17? Come here,' he motioned with his finger for the girl to join him on stage. 'Give me a hug first of all,' he told her, before pressing his body into hers. When he finally let go and with the girl off stage, Leto turned…